fieldy | A ruby library for reading/writing fixed width files | Media library
kandi X-RAY | fieldy Summary
kandi X-RAY | fieldy Summary
Fieldy is a ruby library for reading and writing fixed width records.
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QUESTION
declare type Foo = {
fieldA?: 'a' | 'b' | 'c';
fieldB?: SomeOtherType;
fieldC?: number;
fieldD?: string;
fieldE?: boolean;
}
declare type Bar = {
fieldX?: boolean;
fieldY?: 'hello' | 'world'
fieldZ?: AndYetAnotherType;
}
const getPropertyFromFooOrBar = (
property: string,
foo: Foo,
bar: Bar
): MISSING_TYPE => {
return foo[property] || bar[property] || undefined;
};
...ANSWER
Answered 2021-May-04 at 21:43You can determine the type of a property of combined types by creating a union type and using keyof that union type in a generic type declaration. That's a confusing sentence - here are the steps taken in the example below:
- First, an union type called FooAndBar is declared. This isn't necessary, but it makes things more readable.
- A generic type argument is created for the function that derives from the keys of the intersection type.
- The property argument is declared using that generic type.
- In order to avoid a compiler issue, the two objects are combined. This way they fit the signature of the FooAndBar type.
- Because the types are combined, I can use the value of property in an indexer. Either the value will be fined in the combined type or undefined will be returned.
- The return type of the sample call will be 'a' | 'b' | 'c' since the language service picks up that fieldA is a property of Foo with 'a' | 'b' | 'c' as its type.
QUESTION
I have this document :
...ANSWER
Answered 2020-Dec-24 at 05:11Might be there would be more easy option than this,
$unwind
deconstructarrayOfObjects
array$group
by_id, type and elem
, construct array ofarrayOfObjects
$arrayToObject
convert k and v from array to object$group
by_id
and merge objects in root
QUESTION
I was running python code below:
...ANSWER
Answered 2020-Dec-21 at 22:15Steve's solution above worked for me. pypi.org/project/attributedict
QUESTION
I am trying to implement a web application that takes in user data to do something and then shows a new page when the task is done. While the task is being executed(since what I am doing takes a while), I am using jQuery to show to the user that it is being performed in the background and he/she needs to wait.
A part of the Javascript works fine and shows the wait screen, but the form data is not being sent to my backend that is running on flask on python.
My HTML file login.html
:
ANSWER
Answered 2020-Nov-06 at 22:07Try using val = request.form["btn_identifier_login"]
. This should take in the input data to your variable val
.
QUESTION
I have a set of oil wells compiled in a pandas dataframe. It looks like this:
...ANSWER
Answered 2020-Aug-12 at 02:47You can strip the suffix of the well column using wells.well.str.split('-').str[0])
. Therefore instead of wells.groupby('well')
, use wells.groupby(wells.well.str.split('-').str[0]))
. See solution below with this in mind.
QUESTION
I have a resultset from a SELECT
query, based on a certain ORDER BY
condition, and I’m trying to check the integrity of the order in which the resultset is rendered. First, I’m specifying a LIMIT
, on the basis of which, the resultset size is limited. Then, I’m selecting a random PK
value from the resultset, get a particular row and use the comparison operator on that row value(s), for the next SELECT
. Something like this(Let’s suppose a is the random row from above):
ANSWER
Answered 2020-Jun-05 at 22:17a.X > b.X AND a.Y > b.Y
QUESTION
I'm trying to make a snake game and maybe this error is one of possible. So when I'm debugging and stepping over then I getting link to exception in header file of vector and in exception code wrote that vector has invalid subscript. (Error cause can called by vector bodyPart). The compiler message:
...Unhandled exception at 0x00007FFA227EA799 in snake.exe: Microsoft C++ exception: std::out_of_range at memory location 0x00000052FA7CDFD0.
ANSWER
Answered 2020-May-31 at 17:34For what I can see here, the problem might be the
QUESTION
I need to perform an aggregate on a mongodb collection. But I can't find the correct aggregation pipeline.
In fact, I need to get Ids of different documents when field1 == field2
(field1 not in the same document than field 2).
For example I want to find all documents when the source is the same than the target : document1.fieldX == document2.fieldY
It about finding the target server by port numbers.
Sample docs:
...ANSWER
Answered 2020-May-07 at 05:47You need to try $lookup stage of aggregation pipeline on same collection :
QUESTION
In R I need to create a new dataframe (DF3) and map some data from two existing dataframes (DF1 and DF2). Some mapped fields will be net-new, some mapped fields will be existing with same name and some fields will be existing under a different name. The basic framework is this:
...ANSWER
Answered 2020-Jan-23 at 20:00I'm not sure if this is the result you are looking for, but this line of code copies the desired fields from D1
and D2
into a new D3
. The values are copied into the new dataframe by concatenating (c(...)
) the desired values from the original dataframes.
QUESTION
I have a load of UIView objects created using a class called 'SheetField'.
The objects are usually initialised throughout the app as follows:
...ANSWER
Answered 2020-Jan-22 at 17:44You got caught in the value type trap.
In this line
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