tpc | TPC : A parser combinator for C based on templates | Parser library

by gahag C++ Version: Current License: Non-SPDX

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | tpc Summary

tpc is a C++ library typically used in Utilities, Parser applications. tpc has no bugs, it has no vulnerabilities and it has low support. However tpc has a Non-SPDX License. You can download it from GitHub.

TPC: A parser combinator for C++ based on templates.

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Quality

Security

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Support

tpc has a low active ecosystem.

It has 8 star(s) with 2 fork(s). There are 1 watchers for this library.

It had no major release in the last 6 months.

tpc has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of tpc is current.

Quality

tpc has no bugs reported.

Security

tpc has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

tpc has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

tpc releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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tpc Key Features

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tpc Examples and Code Snippets

No Code Snippets are available at this moment for tpc.

Community Discussions

Trending Discussions on tpc

Spark executors and shuffle in local mode

PL/SQL Update row value via cursor

Export non-varchar data to CSV table using Trino (formerly PrestoDB)

Definition of COBOL variable to use for DB2 date arithmetic

SQL server connection (JDBC)

Clover XML Report - Classes and Trait coverage formula

Connecting to an OPC-UA server using Eclipse Milo, fails on BadHostUnknown

EntityFramwork Core and Inheritance TPT

Conan cannot find package id from new build server

Hive TPCDS Query30 "Only SubQuery expressions that are top level conjuncts are allowed "

QUESTION

Spark executors and shuffle in local mode

Asked 2021-Jun-12 at 16:13

I am running a TPC-DS benchmark for Spark 3.0.1 in local mode and using sparkMeasure to get workload statistics. I have 16 total cores and SparkContext is available as

Spark context available as 'sc' (master = local[*], app id = local-1623251009819)

Q1. For local[*], driver and executors are created in a single JVM with 16 threads. Considering Spark's configuration which of the following will be true?

1 worker instance, 1 executor having 16 cores/threads
1 worker instance, 16 executors each having 1 core

For a particular query, sparkMeasure reports shuffle data as follows

shuffleRecordsRead => 183364403
shuffleTotalBlocksFetched => 52582
shuffleTotalBlocksFetched => 52582
shuffleLocalBlocksFetched => 52582
shuffleRemoteBlocksFetched => 0
shuffleTotalBytesRead => 1570948723 (1498.0 MB)
shuffleLocalBytesRead => 1570948723 (1498.0 MB)
shuffleRemoteBytesRead => 0 (0 Bytes)
shuffleRemoteBytesReadToDisk => 0 (0 Bytes)
shuffleBytesWritten => 1570948723 (1498.0 MB)
shuffleRecordsWritten => 183364480

Q2. Regardless of the query specifics, why is there data shuffling when everything is inside a single JVM?

...

ANSWER

Answered 2021-Jun-11 at 05:56

executor is a jvm process when you use local[*] you run Spark locally with as many worker threads as logical cores on your machine so : 1 executor and as many worker threads as logical cores. when you configure SPARK_WORKER_INSTANCES=5 in spark-env.sh and execute these commands start-master.sh and start-slave.sh spark://local:7077 to bring up a standalone spark cluster in your local machine you have one master and 5 workers, if you want to send your application to this cluster you must configure application like SparkSession.builder().appName("app").master("spark://localhost:7077") in this case you can't specify [*] or [2] for example. but when you specify master to be local[*] a jvm process is created and master and all workers will be in that jvm process and after your application finished that jvm instance will be destroyed. local[*] and spark://localhost:7077 are two separate things.
workers do their job using tasks and each task actually is a thread i.e. task = thread. workers have memory and they assign a memory partition to each task in order to they do their job such as reading a part of a dataset into its own memory partition or do a transformation on read data. when a task such as join needs other partitions, shuffle occurs regardless weather the job is ran in cluster or local. if you were in cluster there is a possibility that two tasks were in different machines so Network transmission will be added to other stuffs such as writing the result and then reading by another task. in local if task B needs the data in the partition of the task A, task A should write it down and then task B will read it to do its job

Source https://stackoverflow.com/questions/67923596

QUESTION

PL/SQL Update row value via cursor

Asked 2021-Jun-02 at 22:38

I am new to pl/sql and I got stuck. I have a table consisting of 3 columns: package_uid, csms_package_id and flag. First two columns are filled and the third is empty. Flag column is filled when a procedure is called in a way that procedure compares package_id-s from that table and another table and if they are a match, the flag should be 'YES'. This is my code:

...

ANSWER

Answered 2021-Jun-02 at 08:11

You aren't updating anything; if you want to do that, you'll have to use UPDATE or MERGE statement.

Though, why PL/SQL and why nested loops? That looks highly inefficient. How about a simple & single merge instead?

Source https://stackoverflow.com/questions/67801271

QUESTION

Export non-varchar data to CSV table using Trino (formerly PrestoDB)

Asked 2021-Mar-21 at 10:22

I am working on some benchmarks and need to compare ORC, Parquet and CSV formats. I have exported TPC/H (SF1000) to ORC based tables. When I want to export it to Parquet I can run:

...

ANSWER

Answered 2021-Mar-20 at 20:13

In Trino Hive connector, the CSV table can contain varchar columns only.

You need to cast the exported columns to varchar when creating the table

Source https://stackoverflow.com/questions/66714596

QUESTION

Definition of COBOL variable to use for DB2 date arithmetic

Asked 2021-Jan-22 at 11:31

I have cases where I want to a add or substract a variable number of days from a timestamp.

The most simple example is this:

...

ANSWER

Answered 2021-Jan-22 at 11:31

Decimal in Mainframe-DB2 means comp-3.

So the field should be defined as S9(08) comp-3

If you look at the Cobol Copybooks generated by DB2 for DB2 Tables / Views you will see both the DB2 definition and the generated Cobol fields. That can be another way to solve queries like this

Source https://stackoverflow.com/questions/65841094

QUESTION

SQL server connection (JDBC)

Asked 2020-Dec-06 at 03:01

i would like to connect the microsoft SQL server with java, using JDBC but i can't.

I have done these steps:

download jdbc https://go.microsoft.com/fwlink/?linkid=2137600
extraxt a zip file
add mssql-jdbc-8.4.1.jre14.jar to my eclipse IDE: --> propeties --> java build path --> classpath --> add external JAR --> selected mssql-jdbc-8.4.1.jre14.jar
in Microsoft SQL server configuration manager --> SQL server network configuration --> protocol for MCSQLSERVER --> tpc/ip --> enabled
i created a SQL server authentication named theapplegeek

java -version:

...

ANSWER

Answered 2020-Dec-06 at 02:27

In your JDBC URL, change "1344" to "1433". Also, make sure your firewall rules don't prevent the connection. See https://docs.microsoft.com/en-us/sql/sql-server/install/configure-the-windows-firewall-to-allow-sql-server-access?view=sql-server-ver15

Source https://stackoverflow.com/questions/65164047

QUESTION

Clover XML Report - Classes and Trait coverage formula

Asked 2020-Nov-13 at 21:18

I am working on a customized application to parse through the clover.xml report. Just wondering if anybody knows which is the correct formula to get the Classes and Traits total coverage percentage.

Here's the formulas that I found for Lines and Functions&Methods coverage:

...

ANSWER

Answered 2020-Nov-13 at 16:13

I don't know anything about clover, but - if I understand you correctly - you can use php (which is tagged in your question) do something like the following. Obviously, you can then modify it as necessary:

Source https://stackoverflow.com/questions/64812949

QUESTION

Connecting to an OPC-UA server using Eclipse Milo, fails on BadHostUnknown

Asked 2020-Nov-10 at 13:56

I am new to OPC-UA and Eclipse Milo and I am trying to construct a client that can connect to the OPC-UA server of a machine we have just acquired.

I have been able to set up a simple OPC-UA server on my laptop by using this python tutorial series: https://www.youtube.com/watch?v=NbKeBfK3pfk. Additionally, I have been able to use the Eclipse Milo examples to run the subscription example successfully to read some values from this server.

However, I have been having difficulty connecting to the OPC-UA server of the machine we have just received. I have successfully connected to this server using the UaExpert client, but we want to build our own client using Eclipse Milo. I can see that some warnings come up when using UaExpert to connect to the server which appear to give clues about the issue but I have too little experience in server-client communications/OPC-UA and would appreciate some help. I will explain what happens when I use the UaExpert client as I have been using this to try and diagnose what is going on.

I notice that when I first launch UaExpert I get the following errors which could be relevant:

...

ANSWER

Answered 2020-Aug-10 at 18:07

The issue is that the computer you're running the client on can't resolve the hostname "br-automation" into an IP address.

The solution if you can't configure your server to return an IP address instead is to manually rebuild the EndpointDescriptions you get from the GetEndpoints service call so they have an endpoint URL that contains the IP address instead of the hostname. This is what UaExpert is doing behind the scenes when it warns you about replacing the hostname.

You can use EndpointUtil#updateUrl to build a new EndpointDescription before it gets passed to the OpcUaClientConfig.

Source https://stackoverflow.com/questions/63345326

QUESTION

EntityFramwork Core and Inheritance TPT

Asked 2020-Oct-15 at 08:41

I have read some posts, like this, this and this.

Some tables from the database:

I migrated from EF4 creating the models using Scaffold-DbContext, I expected it generates followings:

...

ANSWER

Answered 2020-Oct-15 at 08:41

Table-per-Type isn't supported in EF Core versions lower than 5.0. It was first added in EF Core 5 Preview 8. If you want to use TPT you'll have to migrate to EF Core 5.

Currently EF Core 5 is in RC2 which can be used in production. From the announcement :

This is a feature complete release candidate of EF Core 5.0 and ships with a "go live" license. You are supported using it in production.

From the documentation's example, these classes :

Source https://stackoverflow.com/questions/64367570

QUESTION

Conan cannot find package id from new build server

Asked 2020-Oct-07 at 22:01

I am consuming with Conan a project from the artifactory.

The artifact was built in my Jenkins pipeline and was uploaded to the artifactory.

I got 2 build servers, I want to move from the old one to the new one.

When I am consuming the artifact that was built in the new build server I am getting the following error:

...

ANSWER

Answered 2020-Oct-07 at 22:01

The binary that you are trying to install in the new server is requesting this binary:

Source https://stackoverflow.com/questions/64228634

QUESTION

Hive TPCDS Query30 "Only SubQuery expressions that are top level conjuncts are allowed "

Asked 2020-Oct-05 at 20:03

I am getting the above error when trying to run a tpcds query 30 in Hive. I did research and know this is not allowed in Hive so I am wondering how to rewrite this query. I directly got it from this website. http://www.tpc.org/tpcds/default5.asp

Error: Error while compiling statement: FAILED: SemanticException Line 0:-1 Unsupported SubQuery Expression 'ctr_state': Only SubQuery expressions that are top level conjuncts are allowed

Query 30 ...

ANSWER

Answered 2020-Oct-05 at 08:00

Calculate avg(ctr_total_return) in the subquery customer_total_return using analytic function and remove subquery from the WHERE:

Source https://stackoverflow.com/questions/64203537

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install tpc

You can download it from GitHub.

Support

TPC is documented with comments adjacent to parser definitions and function prototypes. Module specific documentation can be found in the module's header file.

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