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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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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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How do I show/hide a UIBarButtonItem?
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Or Apple could've just added .hidden property. -_-
– GeneCode
Feb 22 '16 at 11:29
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Xcode debugging - displaying images
... Awesome suggestion @mackworth. Thanks.
– arango_86
Jul 30 '18 at 10:15
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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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How to call Android contacts list?
...cation manifest.
<uses-permission android:name="android.permission.READ_CONTACTS"/>
2. Calling the Contact Picker
Within your Activity, create an Intent that asks the system to find an Activity that can perform a PICK action from the items in the Contacts URI.
Intent intent = new Intent(I...
Git diff output to file preserve coloring
...ion and open it in Notepad++ or Vim or SublimeText.
git diff > 20150203_someChanges.diff
Thanks @Monsingor
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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...