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Python: most idiomatic way to convert None to empty string?
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answered Jun 23 '09 at 19:28
TriptychTriptych
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How to output numbers with leading zeros in JavaScript [duplicate]
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answered Jun 8 '10 at 15:33
InfinitiesLoopInfinitiesLoop
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Output first 100 characters in a string
...s shorter than 100, for example print 'foo'[:100] (note that len('foo') is 3, so even when foo[100] doesn't work, it does)
– Rodrigo Laguna
Mar 28 '18 at 19:40
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Send inline image in email
... Has Sent You A Screenshot";
mail.Body = String.Format(
"<h3>Client: " + data.client_id + " Has Sent You A Screenshot</h3>" +
@"<img src=""cid:{0}"" />", att.ContentId);
mail.IsBodyHtml = true;
mail.Attachments.Add(att);
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What is the difference between atan and atan2 in C++?
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133
std::atan2 allows calculating the arctangent of all four quadrants. std::atan only allows calcu...
How can I do string interpolation in JavaScript?
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Since ES6, you can use template literals:
const age = 3
console.log(`I'm ${age} years old!`)
P.S. Note the use of backticks: ``.
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“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
..., "", "0", null, false or [].
Example:
$o = [];
@$var = ["",0,null,1,2,3,$foo,$o['myIndex']];
array_walk($var, function($v) {
echo (!isset($v) || $v == false) ? 'true ' : 'false';
echo ' ' . (empty($v) ? 'true' : 'false');
echo "\n";
});
Test the above snippet in the 3v4l.org onlin...
Event listener for when element becomes visible?
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edited Aug 1 '18 at 12:34
aleksandrbel
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performSelector may cause a leak because its selector is unknown
...ts this information from the header of the object type you're working with.3
There are really only 4 things that ARC would consider for the return value:4
Ignore non-object types (void, int, etc)
Retain object value, then release when it is no longer used (standard assumption)
Release new object ...
What's the best practice for putting multiple projects in a git repository? [closed]
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3 Answers
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