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How to assign the output of a Bash command to a variable? [duplicate]
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In this specific case, note that bash has a variable called PWD that contains the current directory: $PWD is equivalent to `pwd`. (So do other shells, this is a standard feature.) So you can write your script like this:
#!/bin/bash
until [ "$PWD" = "/" ]; do
echo "$PWD"
ls ...
“Could not find any information for class named ViewController”
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What solved this issue for me was actually deleting the class from the project.
Steps:
In the project file explorer (left panel) find the class and right click -> Delete
Remove reference (do not move to trash as you will lose the class for good)
Right click...
Difference between Visibility.Collapsed and Visibility.Hidden
...have focus, you can't navigate to the control using the TAB key, etcetera, all of which still can if it would have a height and width of zero. But again, in terms of layout, you could say that.
– Razzie
May 20 '09 at 8:45
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How can I make the tabs work normally on Xcode 4?
Xcode finally added tabs but the problem is that they behave very strange. For example they will keep a tab open only if it was opened to a new tab.
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Why does Apple recommend to use dispatch_once for implementing the singleton pattern under ARC?
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dispatch_once() is absolutely synchronous. Not all GCD methods do things asynchronously (case in point, dispatch_sync() is synchronous). The use of dispatch_once() replaces the following idiom:
+ (MyClass *)sharedInstance {
static MyClass *sharedInstance;
@synchr...
Should I use multiplication or division?
...wer compared to the lower overhead of the VM. Remember that compilers generally cannot optimize floating point much in order to guarantee precision.
– rasmus
Sep 14 '12 at 7:22
7
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How to sort findAll Doctrine's method?
...octrine's documentation, but I haven't been able to find a way to sort findAll() Results.
12 Answers
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How do I iterate through children elements of a div using jQuery?
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Use children() and each(), you can optionally pass a selector to children
$('#mydiv').children('input').each(function () {
alert(this.value); // "this" is the current element in the loop
});
You could also just use the immediate child selector:
$('#mydiv >...
“[notice] child pid XXXX exit signal Segmentation fault (11)” in apache error.log [closed]
... Hmm thats weird. Can you make sure that the process that segfaults actually is the on you are attached gdb to? check dmesg for the pid of the segfaulted process.
– Mattias Wadman
Aug 19 '12 at 19:54
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How does the Meteor JavaScript framework work? [closed]
...u have scripts on server which take data from database and add that dynamically to web-pages and the user-submitted data gets added to databases through some other scrips.
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