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PHP - Extracting a property from an array of objects
...u have PHP 5.5 or later, the best way is to use the built in function array_column():
$idCats = array_column($cats, 'id');
But the son has to be an array or converted to an array
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Is it safe to resolve a promise multiple times?
...se(async (rs, rj) => {
const getPromise = () => new Promise((_resolve, reject) => {
try {
reject()
} catch (err) {
rj('error caught in unexpected location')
}
})
try {
await getPromise()
...
argparse module How to add option without any argument?
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As @Felix Kling suggested use action='store_true':
>>> from argparse import ArgumentParser
>>> p = ArgumentParser()
>>> _ = p.add_argument('-f', '--foo', action='store_true')
>>> args = p.parse_args()
>>> args.foo
False
&g...
endsWith in JavaScript
...l. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith
T.J. Crowder - Creating substrings isn't expensive on modern browsers; it may well have been in 2010 when this answer was posted. These days, the simple this.substr(-suffix.length) === suffix approach...
Find difference between timestamps in seconds in PostgreSQL
...
Try:
SELECT EXTRACT(EPOCH FROM (timestamp_B - timestamp_A))
FROM TableA
Details here: EXTRACT.
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Is there a limit to the length of a GET request? [duplicate]
...timum behavior. [ics.uci.edu/~fielding/pubs/dissertation/evaluation.htm#sec_6_1]
– Vinko Vrsalovic
Feb 17 '12 at 14:54
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What does “%” (percent) do in PowerShell?
...at the % operation starts script blocks after the pipeline, although about_Script_Blocks indicates the % isn't necessary.
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Is there a way to suppress warnings in Xcode?
...b.
Under User-Defined: find (or create if you don't find one )the key : GCC_WARN_UNUSED_VARIABLE set it to NO.
EDIT-2
Example:
BOOL ok = YES;
NSAssert1(ok, @"Failed to calculate the first day the month based on %@", self);
the compiler shows unused variable warning for ok.
Solution:
BOOL ...
Unix command-line JSON parser? [closed]
...sing modules built into the Perl core:
perl -MData::Dumper -MJSON::PP=from_json -ne'print Dumper(from_json($_))'
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How can I read a large text file line by line using Java?
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Use StandardCharsets.UTF_8, use Stream<String> for conciseness, and avoid using forEach() and especially forEachOrdered() unless there's a reason.
– Aleksandr Dubinsky
Dec 15 '13 at 9:29
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