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kandi has reviewed reflections and discovered the below as its top functions. This is intended to give you an instant insight into reflections implemented functionality, and help decide if they suit your requirements.
Java runtime metadata analysis
Usage
# Maven
<dependency>
<groupId>org.reflections</groupId>
<artifactId>reflections</artifactId>
<version>0.10.2</version>
</dependency>
# Gradle
implementation 'org.reflections:reflections:0.10.2'
Scan
// typical usage: scan package with the default scanners SubTypes, TypesAnnotated
Reflections reflections = new Reflections(
new ConfigurationBuilder()
.forPackage("com.my.project")
.filterInputsBy(new FilterBuilder().includePackage("com.my.project")));
// or similarly using the convenient constructor
Reflections reflections = new Reflections("com.my.project");
Query
import static org.reflections.scanners.Scanners.*;
// SubTypes
Set<Class<?>> modules =
reflections.get(SubTypes.of(Module.class).asClass());
// TypesAnnotated (*1)
Set<Class<?>> singletons =
reflections.get(TypesAnnotated.with(Singleton.class).asClass());
// MethodsAnnotated
Set<Method> resources =
reflections.get(MethodsAnnotated.with(GetMapping.class).as(Method.class));
// FieldsAnnotated
Set<Field> ids =
reflections.get(FieldsAnnotated.with(Id.class).as(Field.class));
// Resources
Set<String> properties =
reflections.get(Resources.with(".*\\.properties"));
ReflectionUtils
import static org.reflections.ReflectionUtils.*;
Set<Class<?>> superTypes = get(SuperTypes.of(T));
Set<Field> fields = get(Fields.of(T));
Set<Constructor> constructors = get(Constructors.of(T));
Set<Methods> methods = get(Methods.of(T));
Set<URL> resources = get(Resources.with(T));
Set<Annotation> annotations = get(Annotations.of(T));
Set<Class<? extends Annotation>> annotationTypes = get(AnnotationTypes.of(T));
Query API
// filter, as/map
QueryFunction<Store, Method> getters =
Methods.of(C1.class)
.filter(withModifier(Modifier.PUBLIC))
.filter(withPrefix("get").and(withParametersCount(0)))
.as(Method.class);
// compose Scanners and ReflectionUtils functions
QueryFunction<Store, Method> methods =
SubTypes.of(type).asClass() // <-- classpath scanned metadata
.flatMap(Methods::of); // <-- java reflection api
// function of function
QueryFunction<Store, Class<? extends Annotation>> queryAnnotations =
Annotations.of(Methods.of(C4.class))
.map(Annotation::annotationType);
What does the "-" mean in front of a ruby symbol?
a = "foo"
b = "foo"
a.object_id #=> 6980
b.object_id #=> 7000
a = -"foo"
b = -"foo"
a.object_id #=> 6980
b.object_id #=> 6980
-----------------------
a = "foo"
b = "foo"
a.object_id #=> 6980
b.object_id #=> 7000
a = -"foo"
b = -"foo"
a.object_id #=> 6980
b.object_id #=> 6980
-----------------------
(-name).to_s
# which is the same as
name.-@().to_s()
-(name.to_s)
# which is the same as
name.to_s().-@()
-----------------------
(-name).to_s
# which is the same as
name.-@().to_s()
-(name.to_s)
# which is the same as
name.to_s().-@()
How to convert lidar format las to data.frame?
library(lidR)
LASfile <- system.file("extdata", "example.laz", package="rlas")
las <- readLAS(LASfile)
summary(las)
#> class : LAS (v1.0 format 1)
#> memory : 21.2 Kb
#> extent : 339002.9, 339015.1, 5248000, 5248001 (xmin, xmax, ymin, ymax)
#> coord. ref. : NAD83 / UTM zone 17N
#> area : 16 m²
#> points : 30 points
#> density : 1.88 points/m²
#> density : 1.62 pulses/m²
#> File signature: LASF
#> File source ID: 0
#> Global encoding:
#> - GPS Time Type: GPS Week Time
#> - Synthetic Return Numbers: no
#> - Well Know Text: CRS is GeoTIFF
#> - Aggregate Model: false
#> Project ID - GUID: 00000000-0000-0000-0000-000000000000
#> Version: 1.0
#> System identifier: LAStools (c) by rapidlasso GmbH
#> Generating software: las2las (version 201011)
#> File creation d/y: 343/2011
#> header size: 227
#> Offset to point data: 323
#> Num. var. length record: 1
#> Point data format: 1
#> Point data record length: 28
#> Num. of point records: 30
#> Num. of points by return: 26 4 0 0 0
#> Scale factor X Y Z: 0.001 0.001 0.001
#> Offset X Y Z: 6e+05 6500000 0
#> min X Y Z: 339002.9 5248000 973.145
#> max X Y Z: 339015.1 5248001 978.345
#> Variable Length Records (VLR):
#> Variable Length Record 1 of 1
#> Description: by LAStools of rapidlasso GmbH
#> Tags:
#> Key 1024 value 1
#> Key 3072 value 26917
#> Key 3076 value 9001
#> Key 4099 value 9001
#> Extended Variable Length Records (EVLR): void
payload(las)
#> Z gpstime Intensity ReturnNumber NumberOfReturns ScanDirectionFlag
#> 1 975.589 269347.3 82 1 1 1
#> 2 974.778 269347.3 54 1 1 1
#> 3 974.471 269347.3 27 2 2 1
#> 4 974.025 269347.3 55 2 2 1
#> 5 974.298 269347.3 117 1 1 0
#> 6 974.985 269347.3 81 1 1 0
#> 7 975.182 269347.3 84 1 1 1
#> 8 974.434 269347.3 104 1 1 1
#> 9 974.159 269347.3 91 1 1 1
#> 10 973.145 269347.3 99 1 1 1
#> 11 976.739 269347.5 87 1 1 1
#> 12 976.823 269347.5 83 1 1 1
#> 13 977.227 269347.5 87 1 1 1
#> 14 975.873 269347.5 87 1 1 1
#> 15 975.782 269347.5 107 1 1 1
#> 16 975.353 269347.5 76 1 1 1
#> 17 974.704 269347.5 113 1 1 1
#> 18 977.170 269347.5 64 1 1 0
#> 19 977.757 269347.5 89 1 1 0
#> 20 978.212 269347.5 98 1 1 0
#> 21 978.309 269347.5 50 1 2 0
#> 22 974.816 269347.5 31 2 2 0
#> 23 978.345 269347.5 51 1 2 1
#> 24 974.824 269347.5 32 2 2 1
#> 25 978.014 269347.5 85 1 1 1
#> 26 977.781 269347.5 94 1 1 1
#> 27 976.455 269347.5 78 1 1 1
#> 28 976.313 269347.7 71 1 1 1
#> 29 975.735 269347.7 75 1 1 1
#> 30 975.674 269347.7 106 1 1 1
#> EdgeOfFlightline Classification Synthetic_flag Keypoint_flag Withheld_flag
#> 1 1 1 FALSE FALSE FALSE
#> 2 0 1 FALSE FALSE FALSE
#> 3 0 1 FALSE FALSE FALSE
#> 4 0 1 FALSE FALSE FALSE
#> 5 0 1 FALSE FALSE FALSE
#> 6 0 1 FALSE FALSE FALSE
#> 7 1 1 FALSE FALSE FALSE
#> 8 0 1 FALSE FALSE FALSE
#> 9 0 1 FALSE FALSE FALSE
#> 10 0 1 FALSE FALSE FALSE
#> 11 1 1 FALSE FALSE FALSE
#> 12 0 1 FALSE FALSE FALSE
#> 13 0 1 FALSE FALSE FALSE
#> 14 0 1 FALSE FALSE FALSE
#> 15 0 1 FALSE FALSE FALSE
#> 16 0 1 FALSE FALSE FALSE
#> 17 0 1 FALSE FALSE FALSE
#> 18 0 1 FALSE FALSE FALSE
#> 19 0 1 FALSE FALSE FALSE
#> 20 0 1 FALSE FALSE FALSE
#> 21 0 1 FALSE FALSE FALSE
#> 22 0 2 FALSE FALSE FALSE
#> 23 1 1 FALSE FALSE FALSE
#> 24 1 2 FALSE FALSE FALSE
#> 25 0 1 FALSE FALSE FALSE
#> 26 0 1 FALSE FALSE FALSE
#> 27 0 1 FALSE FALSE FALSE
#> 28 1 1 FALSE FALSE FALSE
#> 29 0 2 FALSE FALSE FALSE
#> 30 0 1 FALSE FALSE FALSE
#> ScanAngleRank UserData PointSourceID X Y
#> 1 -21 32 17 339002.9 5248001
#> 2 -21 32 17 339003.0 5248000
#> 3 -21 32 17 339002.9 5248000
#> 4 -21 32 17 339002.9 5248000
#> 5 -21 32 17 339003.6 5248000
#> 6 -21 32 17 339003.5 5248000
#> 7 -21 32 17 339003.6 5248000
#> 8 -21 32 17 339003.7 5248000
#> 9 -21 32 17 339003.6 5248000
#> 10 -21 32 17 339003.7 5248000
#> 11 -22 32 17 339009.6 5248001
#> 12 -22 32 17 339009.5 5248001
#> 13 -22 32 17 339009.2 5248000
#> 14 -22 32 17 339009.4 5248001
#> 15 -22 32 17 339009.3 5248000
#> 16 -22 32 17 339009.3 5248000
#> 17 -22 32 17 339009.3 5248000
#> 18 -22 32 17 339009.5 5248000
#> 19 -22 32 17 339009.5 5248000
#> 20 -22 32 17 339009.5 5248000
#> 21 -22 32 17 339009.6 5248000
#> 22 -22 32 17 339010.7 5248001
#> 23 -22 32 17 339009.6 5248000
#> 24 -22 32 17 339010.6 5248001
#> 25 -22 32 17 339009.5 5248000
#> 26 -22 32 17 339009.4 5248000
#> 27 -22 32 17 339009.7 5248000
#> 28 -22 32 17 339015.1 5248000
#> 29 -22 32 17 339015.1 5248000
#> 30 -22 32 17 339015.0 5248000
-----------------------
library(lidR)
LASfile <- system.file("extdata", "example.laz", package="rlas")
las <- readLAS(LASfile)
summary(las)
#> class : LAS (v1.0 format 1)
#> memory : 21.2 Kb
#> extent : 339002.9, 339015.1, 5248000, 5248001 (xmin, xmax, ymin, ymax)
#> coord. ref. : NAD83 / UTM zone 17N
#> area : 16 m²
#> points : 30 points
#> density : 1.88 points/m²
#> density : 1.62 pulses/m²
#> File signature: LASF
#> File source ID: 0
#> Global encoding:
#> - GPS Time Type: GPS Week Time
#> - Synthetic Return Numbers: no
#> - Well Know Text: CRS is GeoTIFF
#> - Aggregate Model: false
#> Project ID - GUID: 00000000-0000-0000-0000-000000000000
#> Version: 1.0
#> System identifier: LAStools (c) by rapidlasso GmbH
#> Generating software: las2las (version 201011)
#> File creation d/y: 343/2011
#> header size: 227
#> Offset to point data: 323
#> Num. var. length record: 1
#> Point data format: 1
#> Point data record length: 28
#> Num. of point records: 30
#> Num. of points by return: 26 4 0 0 0
#> Scale factor X Y Z: 0.001 0.001 0.001
#> Offset X Y Z: 6e+05 6500000 0
#> min X Y Z: 339002.9 5248000 973.145
#> max X Y Z: 339015.1 5248001 978.345
#> Variable Length Records (VLR):
#> Variable Length Record 1 of 1
#> Description: by LAStools of rapidlasso GmbH
#> Tags:
#> Key 1024 value 1
#> Key 3072 value 26917
#> Key 3076 value 9001
#> Key 4099 value 9001
#> Extended Variable Length Records (EVLR): void
payload(las)
#> Z gpstime Intensity ReturnNumber NumberOfReturns ScanDirectionFlag
#> 1 975.589 269347.3 82 1 1 1
#> 2 974.778 269347.3 54 1 1 1
#> 3 974.471 269347.3 27 2 2 1
#> 4 974.025 269347.3 55 2 2 1
#> 5 974.298 269347.3 117 1 1 0
#> 6 974.985 269347.3 81 1 1 0
#> 7 975.182 269347.3 84 1 1 1
#> 8 974.434 269347.3 104 1 1 1
#> 9 974.159 269347.3 91 1 1 1
#> 10 973.145 269347.3 99 1 1 1
#> 11 976.739 269347.5 87 1 1 1
#> 12 976.823 269347.5 83 1 1 1
#> 13 977.227 269347.5 87 1 1 1
#> 14 975.873 269347.5 87 1 1 1
#> 15 975.782 269347.5 107 1 1 1
#> 16 975.353 269347.5 76 1 1 1
#> 17 974.704 269347.5 113 1 1 1
#> 18 977.170 269347.5 64 1 1 0
#> 19 977.757 269347.5 89 1 1 0
#> 20 978.212 269347.5 98 1 1 0
#> 21 978.309 269347.5 50 1 2 0
#> 22 974.816 269347.5 31 2 2 0
#> 23 978.345 269347.5 51 1 2 1
#> 24 974.824 269347.5 32 2 2 1
#> 25 978.014 269347.5 85 1 1 1
#> 26 977.781 269347.5 94 1 1 1
#> 27 976.455 269347.5 78 1 1 1
#> 28 976.313 269347.7 71 1 1 1
#> 29 975.735 269347.7 75 1 1 1
#> 30 975.674 269347.7 106 1 1 1
#> EdgeOfFlightline Classification Synthetic_flag Keypoint_flag Withheld_flag
#> 1 1 1 FALSE FALSE FALSE
#> 2 0 1 FALSE FALSE FALSE
#> 3 0 1 FALSE FALSE FALSE
#> 4 0 1 FALSE FALSE FALSE
#> 5 0 1 FALSE FALSE FALSE
#> 6 0 1 FALSE FALSE FALSE
#> 7 1 1 FALSE FALSE FALSE
#> 8 0 1 FALSE FALSE FALSE
#> 9 0 1 FALSE FALSE FALSE
#> 10 0 1 FALSE FALSE FALSE
#> 11 1 1 FALSE FALSE FALSE
#> 12 0 1 FALSE FALSE FALSE
#> 13 0 1 FALSE FALSE FALSE
#> 14 0 1 FALSE FALSE FALSE
#> 15 0 1 FALSE FALSE FALSE
#> 16 0 1 FALSE FALSE FALSE
#> 17 0 1 FALSE FALSE FALSE
#> 18 0 1 FALSE FALSE FALSE
#> 19 0 1 FALSE FALSE FALSE
#> 20 0 1 FALSE FALSE FALSE
#> 21 0 1 FALSE FALSE FALSE
#> 22 0 2 FALSE FALSE FALSE
#> 23 1 1 FALSE FALSE FALSE
#> 24 1 2 FALSE FALSE FALSE
#> 25 0 1 FALSE FALSE FALSE
#> 26 0 1 FALSE FALSE FALSE
#> 27 0 1 FALSE FALSE FALSE
#> 28 1 1 FALSE FALSE FALSE
#> 29 0 2 FALSE FALSE FALSE
#> 30 0 1 FALSE FALSE FALSE
#> ScanAngleRank UserData PointSourceID X Y
#> 1 -21 32 17 339002.9 5248001
#> 2 -21 32 17 339003.0 5248000
#> 3 -21 32 17 339002.9 5248000
#> 4 -21 32 17 339002.9 5248000
#> 5 -21 32 17 339003.6 5248000
#> 6 -21 32 17 339003.5 5248000
#> 7 -21 32 17 339003.6 5248000
#> 8 -21 32 17 339003.7 5248000
#> 9 -21 32 17 339003.6 5248000
#> 10 -21 32 17 339003.7 5248000
#> 11 -22 32 17 339009.6 5248001
#> 12 -22 32 17 339009.5 5248001
#> 13 -22 32 17 339009.2 5248000
#> 14 -22 32 17 339009.4 5248001
#> 15 -22 32 17 339009.3 5248000
#> 16 -22 32 17 339009.3 5248000
#> 17 -22 32 17 339009.3 5248000
#> 18 -22 32 17 339009.5 5248000
#> 19 -22 32 17 339009.5 5248000
#> 20 -22 32 17 339009.5 5248000
#> 21 -22 32 17 339009.6 5248000
#> 22 -22 32 17 339010.7 5248001
#> 23 -22 32 17 339009.6 5248000
#> 24 -22 32 17 339010.6 5248001
#> 25 -22 32 17 339009.5 5248000
#> 26 -22 32 17 339009.4 5248000
#> 27 -22 32 17 339009.7 5248000
#> 28 -22 32 17 339015.1 5248000
#> 29 -22 32 17 339015.1 5248000
#> 30 -22 32 17 339015.0 5248000
-----------------------
library(lidR)
LASfile <- system.file("extdata", "example.laz", package="rlas")
las <- readLAS(LASfile)
summary(las)
#> class : LAS (v1.0 format 1)
#> memory : 21.2 Kb
#> extent : 339002.9, 339015.1, 5248000, 5248001 (xmin, xmax, ymin, ymax)
#> coord. ref. : NAD83 / UTM zone 17N
#> area : 16 m²
#> points : 30 points
#> density : 1.88 points/m²
#> density : 1.62 pulses/m²
#> File signature: LASF
#> File source ID: 0
#> Global encoding:
#> - GPS Time Type: GPS Week Time
#> - Synthetic Return Numbers: no
#> - Well Know Text: CRS is GeoTIFF
#> - Aggregate Model: false
#> Project ID - GUID: 00000000-0000-0000-0000-000000000000
#> Version: 1.0
#> System identifier: LAStools (c) by rapidlasso GmbH
#> Generating software: las2las (version 201011)
#> File creation d/y: 343/2011
#> header size: 227
#> Offset to point data: 323
#> Num. var. length record: 1
#> Point data format: 1
#> Point data record length: 28
#> Num. of point records: 30
#> Num. of points by return: 26 4 0 0 0
#> Scale factor X Y Z: 0.001 0.001 0.001
#> Offset X Y Z: 6e+05 6500000 0
#> min X Y Z: 339002.9 5248000 973.145
#> max X Y Z: 339015.1 5248001 978.345
#> Variable Length Records (VLR):
#> Variable Length Record 1 of 1
#> Description: by LAStools of rapidlasso GmbH
#> Tags:
#> Key 1024 value 1
#> Key 3072 value 26917
#> Key 3076 value 9001
#> Key 4099 value 9001
#> Extended Variable Length Records (EVLR): void
payload(las)
#> Z gpstime Intensity ReturnNumber NumberOfReturns ScanDirectionFlag
#> 1 975.589 269347.3 82 1 1 1
#> 2 974.778 269347.3 54 1 1 1
#> 3 974.471 269347.3 27 2 2 1
#> 4 974.025 269347.3 55 2 2 1
#> 5 974.298 269347.3 117 1 1 0
#> 6 974.985 269347.3 81 1 1 0
#> 7 975.182 269347.3 84 1 1 1
#> 8 974.434 269347.3 104 1 1 1
#> 9 974.159 269347.3 91 1 1 1
#> 10 973.145 269347.3 99 1 1 1
#> 11 976.739 269347.5 87 1 1 1
#> 12 976.823 269347.5 83 1 1 1
#> 13 977.227 269347.5 87 1 1 1
#> 14 975.873 269347.5 87 1 1 1
#> 15 975.782 269347.5 107 1 1 1
#> 16 975.353 269347.5 76 1 1 1
#> 17 974.704 269347.5 113 1 1 1
#> 18 977.170 269347.5 64 1 1 0
#> 19 977.757 269347.5 89 1 1 0
#> 20 978.212 269347.5 98 1 1 0
#> 21 978.309 269347.5 50 1 2 0
#> 22 974.816 269347.5 31 2 2 0
#> 23 978.345 269347.5 51 1 2 1
#> 24 974.824 269347.5 32 2 2 1
#> 25 978.014 269347.5 85 1 1 1
#> 26 977.781 269347.5 94 1 1 1
#> 27 976.455 269347.5 78 1 1 1
#> 28 976.313 269347.7 71 1 1 1
#> 29 975.735 269347.7 75 1 1 1
#> 30 975.674 269347.7 106 1 1 1
#> EdgeOfFlightline Classification Synthetic_flag Keypoint_flag Withheld_flag
#> 1 1 1 FALSE FALSE FALSE
#> 2 0 1 FALSE FALSE FALSE
#> 3 0 1 FALSE FALSE FALSE
#> 4 0 1 FALSE FALSE FALSE
#> 5 0 1 FALSE FALSE FALSE
#> 6 0 1 FALSE FALSE FALSE
#> 7 1 1 FALSE FALSE FALSE
#> 8 0 1 FALSE FALSE FALSE
#> 9 0 1 FALSE FALSE FALSE
#> 10 0 1 FALSE FALSE FALSE
#> 11 1 1 FALSE FALSE FALSE
#> 12 0 1 FALSE FALSE FALSE
#> 13 0 1 FALSE FALSE FALSE
#> 14 0 1 FALSE FALSE FALSE
#> 15 0 1 FALSE FALSE FALSE
#> 16 0 1 FALSE FALSE FALSE
#> 17 0 1 FALSE FALSE FALSE
#> 18 0 1 FALSE FALSE FALSE
#> 19 0 1 FALSE FALSE FALSE
#> 20 0 1 FALSE FALSE FALSE
#> 21 0 1 FALSE FALSE FALSE
#> 22 0 2 FALSE FALSE FALSE
#> 23 1 1 FALSE FALSE FALSE
#> 24 1 2 FALSE FALSE FALSE
#> 25 0 1 FALSE FALSE FALSE
#> 26 0 1 FALSE FALSE FALSE
#> 27 0 1 FALSE FALSE FALSE
#> 28 1 1 FALSE FALSE FALSE
#> 29 0 2 FALSE FALSE FALSE
#> 30 0 1 FALSE FALSE FALSE
#> ScanAngleRank UserData PointSourceID X Y
#> 1 -21 32 17 339002.9 5248001
#> 2 -21 32 17 339003.0 5248000
#> 3 -21 32 17 339002.9 5248000
#> 4 -21 32 17 339002.9 5248000
#> 5 -21 32 17 339003.6 5248000
#> 6 -21 32 17 339003.5 5248000
#> 7 -21 32 17 339003.6 5248000
#> 8 -21 32 17 339003.7 5248000
#> 9 -21 32 17 339003.6 5248000
#> 10 -21 32 17 339003.7 5248000
#> 11 -22 32 17 339009.6 5248001
#> 12 -22 32 17 339009.5 5248001
#> 13 -22 32 17 339009.2 5248000
#> 14 -22 32 17 339009.4 5248001
#> 15 -22 32 17 339009.3 5248000
#> 16 -22 32 17 339009.3 5248000
#> 17 -22 32 17 339009.3 5248000
#> 18 -22 32 17 339009.5 5248000
#> 19 -22 32 17 339009.5 5248000
#> 20 -22 32 17 339009.5 5248000
#> 21 -22 32 17 339009.6 5248000
#> 22 -22 32 17 339010.7 5248001
#> 23 -22 32 17 339009.6 5248000
#> 24 -22 32 17 339010.6 5248001
#> 25 -22 32 17 339009.5 5248000
#> 26 -22 32 17 339009.4 5248000
#> 27 -22 32 17 339009.7 5248000
#> 28 -22 32 17 339015.1 5248000
#> 29 -22 32 17 339015.1 5248000
#> 30 -22 32 17 339015.0 5248000
-----------------------
library(rlas)
read.las("C:/1/078-638.las")
nexus-staging-maven-plugin: maven deploy failed: An API incompatibility was encountered while executing
export MAVEN_OPTS="--add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.text=ALL-UNNAMED --add-opens=java.desktop/java.awt.font=ALL-UNNAMED"
mvn deploy
<plugin>
<groupId>org.sonatype.plugins</groupId>
<artifactId>nexus-staging-maven-plugin</artifactId>
<version>1.6.8</version>
<extensions>true</extensions>
<configuration>
<serverId>ossrh</serverId>
<nexusUrl>https://s01.oss.sonatype.org/</nexusUrl>
<autoReleaseAfterClose>true</autoReleaseAfterClose>
</configuration>
<dependencies>
<dependency>
<groupId>com.thoughtworks.xstream</groupId>
<artifactId>xstream</artifactId>
<version>1.4.15</version> <!-- apparently this needs to be exactly this version -->
</dependency>
</dependencies>
</plugin>
-----------------------
export MAVEN_OPTS="--add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.text=ALL-UNNAMED --add-opens=java.desktop/java.awt.font=ALL-UNNAMED"
mvn deploy
<plugin>
<groupId>org.sonatype.plugins</groupId>
<artifactId>nexus-staging-maven-plugin</artifactId>
<version>1.6.8</version>
<extensions>true</extensions>
<configuration>
<serverId>ossrh</serverId>
<nexusUrl>https://s01.oss.sonatype.org/</nexusUrl>
<autoReleaseAfterClose>true</autoReleaseAfterClose>
</configuration>
<dependencies>
<dependency>
<groupId>com.thoughtworks.xstream</groupId>
<artifactId>xstream</artifactId>
<version>1.4.15</version> <!-- apparently this needs to be exactly this version -->
</dependency>
</dependencies>
</plugin>
Get passed Annotation Parameters from Field Annotations
for(Field field : cl.getFields()) {
ProcessorParameter param = field.getAnnotation(ProcessorParameter.class);
}
org.reflection.Reflections 0.10.2 fails when running as jar (e.g. in a docker container)
Reflections reflections = new Reflections(new ConfigurationBuilder().forPackages("my.package"));
Set<Class<? extends MyService>> classes = reflections.getSubTypesOf(MyService.class);
How to find the third point coordinates of reflected points?
Q[0] = (P[0] +P1[0])/2; -> P1[0] = 2*Q[0] - P[0]
-----------------------
/**
* @param point the point to be reflected in {x,y} format
* @param midPoint the middle point in {x,y} format
* @return a point on the point-midPoint line in {x,y} format, symmetric to point around midPoint
*/
public static int[] verboseReflectPoint(int[] point, int[] midPoint) {
//calculate the x distance and y distance from point to mid-point
int deltaX = midPoint[0] - point[0];
int deltaY = midPoint[1] - point[1];
//find the symmetric point coordinates by adding twice the distance to point
int reflectedPointX = point[0] + 2*deltaX;
int reflectedPointY = point[1] + 2*deltaY;
int[] reflectedPoint = {reflectedPointX, reflectedPointY};
return reflectedPoint;
}
Unable to find out where reflections-maven plugin comes from
<project ...>
...
<build>
<plugins>
<artifactId>maven-help-plugin</artifactId>
<version>3.2.0</version> <!-- or higher! -->
</plugins>
</build>
...
</project>
mvn -Dverbose=true -Doutput=./eff.pom.xml \
org.apache.maven.plugins:maven-help-plugin:3.2.0:effective-pom
-----------------------
<project ...>
...
<build>
<plugins>
<artifactId>maven-help-plugin</artifactId>
<version>3.2.0</version> <!-- or higher! -->
</plugins>
</build>
...
</project>
mvn -Dverbose=true -Doutput=./eff.pom.xml \
org.apache.maven.plugins:maven-help-plugin:3.2.0:effective-pom
ModuleNotFoundError: No module named '_tkinter' on Jupyter Notebook
$which python
-> alias python='/usr/bin/python3.7'
/usr/bin/python3.7
$jupyter kernelspec list
-> Available kernels:
python3 /home/Natko/.local/share/jupyter/kernels/python3
$nano /home/Natko/.local/share/jupyter/kernels/python3/kernel.json
{
"argv": [
"python",
"-m",
"ipykernel_launcher",
"-f",
"{connection_file}"
],
"display_name": "Python 3",
"language": "python",
}
{
"argv": [
"python",
"-m",
"ipykernel_launcher",
"-f",
"{connection_file}"
],
"display_name": "Python 3",
"language": "python",
"env": {
"PYTHONPATH": "/usr/bin/"
}
}
-----------------------
$which python
-> alias python='/usr/bin/python3.7'
/usr/bin/python3.7
$jupyter kernelspec list
-> Available kernels:
python3 /home/Natko/.local/share/jupyter/kernels/python3
$nano /home/Natko/.local/share/jupyter/kernels/python3/kernel.json
{
"argv": [
"python",
"-m",
"ipykernel_launcher",
"-f",
"{connection_file}"
],
"display_name": "Python 3",
"language": "python",
}
{
"argv": [
"python",
"-m",
"ipykernel_launcher",
"-f",
"{connection_file}"
],
"display_name": "Python 3",
"language": "python",
"env": {
"PYTHONPATH": "/usr/bin/"
}
}
-----------------------
$which python
-> alias python='/usr/bin/python3.7'
/usr/bin/python3.7
$jupyter kernelspec list
-> Available kernels:
python3 /home/Natko/.local/share/jupyter/kernels/python3
$nano /home/Natko/.local/share/jupyter/kernels/python3/kernel.json
{
"argv": [
"python",
"-m",
"ipykernel_launcher",
"-f",
"{connection_file}"
],
"display_name": "Python 3",
"language": "python",
}
{
"argv": [
"python",
"-m",
"ipykernel_launcher",
"-f",
"{connection_file}"
],
"display_name": "Python 3",
"language": "python",
"env": {
"PYTHONPATH": "/usr/bin/"
}
}
-----------------------
$which python
-> alias python='/usr/bin/python3.7'
/usr/bin/python3.7
$jupyter kernelspec list
-> Available kernels:
python3 /home/Natko/.local/share/jupyter/kernels/python3
$nano /home/Natko/.local/share/jupyter/kernels/python3/kernel.json
{
"argv": [
"python",
"-m",
"ipykernel_launcher",
"-f",
"{connection_file}"
],
"display_name": "Python 3",
"language": "python",
}
{
"argv": [
"python",
"-m",
"ipykernel_launcher",
"-f",
"{connection_file}"
],
"display_name": "Python 3",
"language": "python",
"env": {
"PYTHONPATH": "/usr/bin/"
}
}
DirectX 12 application is crashing in Windows 11
DXGI_INFO_QUEUE_MESSAGE_ID hide[] =
{
80 /* IDXGISwapChain::GetContainingOutput: The swapchain's adapter does not control the output on which the swapchain's window resides. */,
};
DXGI_INFO_QUEUE_FILTER filter = {};
filter.DenyList.NumIDs = static_cast<UINT>(std::size(hide));
filter.DenyList.pIDList = hide;
dxgiInfoQueue->AddStorageFilterEntries(DXGI_DEBUG_DXGI, &filter);
D3D12_MESSAGE_ID hide[] =
{
D3D12_MESSAGE_ID_MAP_INVALID_NULLRANGE,
D3D12_MESSAGE_ID_UNMAP_INVALID_NULLRANGE,
// Workarounds for debug layer issues on hybrid-graphics systems
D3D12_MESSAGE_ID_EXECUTECOMMANDLISTS_WRONGSWAPCHAINBUFFERREFERENCE,
D3D12_MESSAGE_ID_RESOURCE_BARRIER_MISMATCHING_COMMAND_LIST_TYPE,
};
D3D12_INFO_QUEUE_FILTER filter = {};
filter.DenyList.NumIDs = static_cast<UINT>(std::size(hide));
filter.DenyList.pIDList = hide;
d3dInfoQueue->AddStorageFilterEntries(&filter);
-----------------------
DXGI_INFO_QUEUE_MESSAGE_ID hide[] =
{
80 /* IDXGISwapChain::GetContainingOutput: The swapchain's adapter does not control the output on which the swapchain's window resides. */,
};
DXGI_INFO_QUEUE_FILTER filter = {};
filter.DenyList.NumIDs = static_cast<UINT>(std::size(hide));
filter.DenyList.pIDList = hide;
dxgiInfoQueue->AddStorageFilterEntries(DXGI_DEBUG_DXGI, &filter);
D3D12_MESSAGE_ID hide[] =
{
D3D12_MESSAGE_ID_MAP_INVALID_NULLRANGE,
D3D12_MESSAGE_ID_UNMAP_INVALID_NULLRANGE,
// Workarounds for debug layer issues on hybrid-graphics systems
D3D12_MESSAGE_ID_EXECUTECOMMANDLISTS_WRONGSWAPCHAINBUFFERREFERENCE,
D3D12_MESSAGE_ID_RESOURCE_BARRIER_MISMATCHING_COMMAND_LIST_TYPE,
};
D3D12_INFO_QUEUE_FILTER filter = {};
filter.DenyList.NumIDs = static_cast<UINT>(std::size(hide));
filter.DenyList.pIDList = hide;
d3dInfoQueue->AddStorageFilterEntries(&filter);
Filebeat is not sending logs to logstash on kubernetes
- name: NODE_NAME
valueFrom:
fieldRef:
fieldPath: spec.nodeName
QUESTION
What does the "-" mean in front of a ruby symbol?
Asked 2022-Mar-21 at 11:50When I had a look into the ActiveRecord
source today, I stumbled upon these lines
name = -name.to_s
ar.aggregate_reflections = ar.aggregate_reflections.merge(-name.to_s => reflection)
What purpose does the -
operator serve for on the symbol name
?
ANSWER
Answered 2022-Mar-21 at 11:05a = "foo"
b = "foo"
a.object_id #=> 6980
b.object_id #=> 7000
vs:
a = -"foo"
b = -"foo"
a.object_id #=> 6980
b.object_id #=> 6980
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