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Get exit code of a background process
... simply appends to the array without having to use a separate variable for indexing or the pid itself. The same thing applies to the STATUS array.
– codeforester
May 5 '18 at 20:37
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How can I parse a YAML file from a Linux shell script?
...n to select sub-values (ie: subvalue.maintainer is a valid key).
access by index is provided to sequences (ie: subvalue.things.-1 is the last element of the subvalue.things sequence.)
access to all sequence/structs elements in one go for use in bash loops.
you can output whole subpart of a YAML fil...
SQL how to increase or decrease one for a int column in one command
...need to worry about being stateless.
If you make it stateless, With good indexes, you will not see a diff with the following SQL vs 1 statement.
IF (select top 1 * form x where PK=@ID)
Insert
else
update
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delete_all vs destroy_all?
...he model class.
So instead of :
u = User.find_by_name('JohnBoy')
u.usage_indexes.destroy_all
You can do :
u = User.find_by_name('JohnBoy')
UsageIndex.destroy_all "user_id = #{u.id}"
The result is one query to destroy all the associated records
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Custom sort function in ng-repeat
...n conjunction with custom filters (since the keys for arrays are numerical indexes), so the template should be updated to reference the injected key names.
<ul ng-repeat="card in cards | orderByValue">
<li>{{card.name}} {{value(card)}}</li>
</ul>
Here is a working fidd...
drag drop files into standard html file input
...solution but figured out for myself. Pretty simple change, just fileInputs[index] = ... to pass the file data to a particular input and then call a function showNext to add a new input stackoverflow.com/a/43397640/6392779
– nick
Apr 13 '17 at 16:46
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Node.js: How to send headers with form data using request module?
...d uri or options object. at request (C:\Users\pjt\node_modules\request\index.js:44:11) at Request._callback (C:\Users\pjt\routes\payment.js:170:11) at Request.self.callback (C:\Users\pjt\node_modules\request\request.js:186:22) at emitTwo (events.js:106:13) at Request.emit (events...
In Python, how does one catch warnings as if they were exceptions?
...y list (i.e. []), then running the code will give you the following error: IndexError: list index out of range. If you're just looking to format or check properties of the captured warnings, then it's better to use a for-loop: for x in w: print(f'{x.category.__name__}: {str(x.message)}')
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Truncating floats in Python
...
try:
cut_point = token_string.index('.') + n + 1
except ValueError: # no decimal in string
return token_string + '.' + '0' * n
else:
if len(token_string) < cut_poin...
Can I set null as the default value for a @Value in Spring?
...lue default - use SPEL (spring expression language) as follows:
@Value("${index.suffix:#{''}}")
private String indexSuffix;
#{''} just gets you an empty string as injected @Value's default.
by yl
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