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Check whether an array is empty [duplicate]
...pty($errors)) {
}
array_filter() function's default behavior will remove all values from array which are equal to null, 0, '' or false.
Otherwise in your particular case empty() construct will always return true if there is at least one element even with "empty" value.
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Passing functions with arguments to another function in Python?
...not obscure.
– S.Lott
Apr 29 '09 at 20:17
11
So that you could retrieve the passed function's res...
Replace input type=file by an image
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This works really well for me:
.image-upload>input {
display: none;
}
<div class="image-upload">
<label for="file-input">
<img src="https://icon-library.net/images/upload-photo-icon/upload-photo-icon-21...
Matplotlib: “Unknown projection '3d'” error
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answered Jun 20 '19 at 19:00
Tushar SharmaTushar Sharma
17911 silver badge44 bronze badges
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Multi-line regex support in Vim
...search expression \_.
– Florian
Mar 20 '16 at 15:40
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Can I protect against SQL injection by escaping single-quote and surrounding user input with single-
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First of all, it's just bad practice. Input validation is always necessary, but it's also always iffy.
Worse yet, blacklist validation is always problematic, it's much better to explicitly and strictly define what values/formats you a...
If threads share the same PID, how can they be identified?
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20
FYI, getpid() returns tgid: asmlinkage long sys_getpid(void) { return current->tgid;}, as shown in www.makelinux.com/
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Using Git, how could I search for a string across all branches?
Using Git, how could I search within all files in all local branches for a given string?
5 Answers
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When should the volatile keyword be used in C#?
...ors and making
them synchronize main memory with their caches".
Actually, that last bit is a lie. The true semantics of volatile reads
and writes are considerably more complex than I've outlined here; in
fact they do not actually guarantee that every processor stops what it
is doing and...
Why does Vim save files with a ~ extension?
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Actually - do I have to have both nobackup and nowritebackup? Is there a way to write a copy of the file as a backup, but not do this write/delete/rename stuff?
– Merlyn Morgan-Graham
Mar 2...