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Assign a variable inside a Block to a variable outside a Block
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You need to use this line of code to resolve your problem:
__block Person *aPerson = nil;
For more details, please refer to this tutorial: Blocks and Variables
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(Mac) -bash: __git_ps1: command not found
...r - in git's development history this is after a commit that split out the __git_ps1 function from the completion functionality into a new file (git-prompt.sh). The commit that introduced this change, which explains the rationale, is af31a456.
I would still suggest that you just source the version...
How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?
...hese instances are objects, you can pass them around, store them, and generally call methods on them. With the support of implicit parameters, it becomes a very powerful tool. Take the following example, for instance:
object Registry {
import scala.reflect.Manifest
private var map= Map.empty[...
How do I rename a local Git branch?
...eives from more than one src.; error: failed to push some refs to 'git@uri:foo/bar.git'
– Anto
Feb 23 '18 at 15:26
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How do I resolve cherry-pick conflicts using their changes?
My git cherry-pick FOO produced a conflict.
1 Answer
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How is the undo tree used in Vim?
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See also :h undo-redo, which lists all the commands and their usage.
There are two ways to traverse the undo tree. One is to go "back in time". g+ and g- will traverse all of the nodes in the tree in chronological or reverse-chronological order (which can...
Multiple Parameters for jQuery selector?
...ish to do a search for an element,
we can restrict that search:
$('div.foo').click(function() {
$('span', this).addClass('bar');
// it will find span elements that are
// descendants of the clicked element (this)
});
Also notice that the selector you post "button, input:submit, a", is ca...
What does character set and collation mean exactly?
...a symbol, the number 0 is the
encoding for 'A', and the combination
of all four letters and their
encodings is a character set.
Now, suppose that we want to compare
two string values, 'A' and 'B'. The
simplest way to do this is to look at
the encodings: 0 for 'A' and 1 for
'B'. Be...
Count how many records are in a CSV Python?
...aranteed to be a fixed size, so the only way to count them is to read them all.
– Martijn Pieters♦
Apr 19 '13 at 15:55
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Longest line in a file
...ing for a simple way to find the length of the longest line in a file. Ideally, it would be a simple bash shell command instead of a script.
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