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How do I test for an empty string in a Bash case statement?
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I use a simple fall through. no parameters passed ($1="") will be caught by the second case statement, yet the following * will catch any unknown parameter. Flipping the "") and *) will not work as *) will catch everything every time in that...
In Python, how to display current time in readable format
...e.g., -0400. %Z gives you current timezone name (or abbreviation) automatically. Python doesn't support %l, you could use %I instead.
– jfs
Dec 14 '13 at 19:30
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Difference between Activity and FragmentActivity
...compatibility with older versions of Android, but other than that, there really isn't much of a difference between the two. Just make sure you change all calls to getLoaderManager() and getFragmentManager() to getSupportLoaderManager() and getSupportFragmentManager() respectively.
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Ansible: Set variable to file content
...les, not remote files.
Here's a complete example from the docs:
- hosts: all
vars:
contents: "{{ lookup('file', '/etc/foo.txt') }}"
tasks:
- debug: msg="the value of foo.txt is {{ contents }}"
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How to put comments in Django templates
...# jquery latest #}
{#
beware, this won't be commented out...
actually renders as regular body text on the page
#}
I find this especially helpful for <a href="{% url 'view_name' %}" views that have not been created yet.
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how to know if the request is ajax in asp.net mvc?
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All AJAX calls made by jQuery will have a header added to indicate it is AJAX. The header to check is X-Requested-With, and the value will be XMLHttpRequest when it is an AJAX call.
Note that AJAX requests are normal GETs or...
backbone.js - events, knowing what was clicked
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Normally on an event bind, you would just use $(this), but I'm fairly sure Backbone views are set up so that this always refer to the view, so try this:
perpage: function(ev) {
alert($(ev.target).text());
}
REALLY LATE EDIT...
Difference between “!==” and “==!” [closed]
...e is that there is no operator ==!.
This expression:
$a ==! $b
Is basically the same as this:
$a == (!$b)
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Base64 Decoding in iOS 7+
...g(@"%@", base64String); // Zm9v
Decoding
NSData *decodedData = [[NSData alloc] initWithBase64EncodedString:base64String options:0];
NSString *decodedString = [[NSString alloc] initWithData:decodedData encoding:NSUTF8StringEncoding];
NSLog(@"%@", decodedString); // foo
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Remove textarea inner shadow on Mobile Safari (iPhone)
By default, it seems Mobile Safari adds the top inner shadow to all input fields, including textarea. Is there a way to remove it?
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