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How can I convert an image into Base64 string using JavaScript?
...we extract 2 or more canvas as a single PNG?
– techie_28
Jul 11 '16 at 11:48
162
Can you please m...
How do I remove/delete a folder that is not empty?
... not empty. I used the following command in my attempt: os.remove("/folder_name") .
19 Answers
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Update one MySQL table with values from another
...l named key such as id. ie an equi-join - http://en.wikipedia.org/wiki/Join_(SQL)#Equi-join
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Sending a message to nil in Objective-C
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What it means is that the runtime doesn't produce an error when objc_msgSend is called on the nil pointer; instead it returns some (often useful) value. Messages that might have a side effect do nothing.
It's useful because most of the default values are more appropriate than an error. For e...
Replacement for “rename” in dplyr
...me() function that works just like plyr::rename().
df <- rename(df, new_name = old_name)
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CSS background-image - What is the correct usage?
..... +1 for being clear on where the path starts.
– me_
Jan 14 '18 at 8:45
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How do you move a commit to the staging area in git?
...dows. Tilde and carot are explained at schacon.github.io/git/git-rev-parse#_specifying_revisions
– ahains
Jun 4 '15 at 18:52
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How to test if a string is JSON or not?
... useful data or an error message string produced by the PHP function mysql_error() . How can I test whether this data is a JSON string or the error message.
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Why is it common to put CSRF prevention tokens in cookies?
I'm trying to understand the whole issue with CSRF and appropriate ways to prevent it. (Resources I've read, understand, and agree with: OWASP CSRF Prevention CHeat Sheet , Questions about CSRF .)
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How do I access this object property with an illegal name?
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<?php
$x = new StdClass();
$x->{'todo-list'} = 'fred';
var_dump($x);
So, $object->{'todo-list'} is the sub-object. If you can set it like that, then you can also read it the same way:
echo $x->{'todo-list'};
Another possibility:
$todolist = 'todo-list';
echo $x->$todolis...