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ruby system command check exit code
...h of system calls in ruby such as the following and I want to check their exit codes simultaneously so that my script exits out if that command fails.
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How to disable code formatting for some part of the code using comments?
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In the 2016.x version it's found in Settings > Editor > Code Style.
– Philippe
Oct 12 '16 at 18:15
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Gmail's new image caching is breaking image links in newsletter
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I think I have figured out the GoogleImageProxy issue.
This is something related to CACHING concept. suppose, you have recently deployed your php code on your server but you forgot to upload images. you tested once with your email logic. your system generated an HTML ...
Alternatives to dispatch_get_current_queue() for completion blocks in iOS 6?
...etion block runs on an implementation defined queue with these properties: x, y, z", and let the block dispatch to a particular queue if the caller wants more control than that. A typical set of properties to specify would be something like "serial, non-reentrant, and async with respect to any other...
Can I have an onclick effect in CSS?
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The closest you'll get is :active:
#btnLeft:active {
width: 70px;
height: 74px;
}
However this will only apply the style when the mouse button is held down. The only way to apply a style and keep it applied onclick is to use a bit of JavaScript.
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How to check if a python module exists without importing it
I need to know if a python module exists, without importing it.
13 Answers
13
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How to exit a function in bash
How would you exit out of a function if a condition is true without killing the whole script, just return back to before you called the function.
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Is there a way to iterate over a dictionary?
...;
The alternate method (which you have to use if you're targeting Mac OS X pre-10.5, but you can still use on 10.5 and iPhone) is to use an NSEnumerator:
NSEnumerator *enumerator = [myDict keyEnumerator];
id key;
// extra parens to suppress warning about using = instead of ==
while((key = [enumer...
Are Duplicate HTTP Response Headers acceptable?
...ificant to the interpretation
of the combined field value, and thus a proxy MUST NOT change the
order of these field values when a message is forwarded
So, multiple headers with the same name is ok (www-authenticate is such a case) if the entire field-value is defined as a comma-separated list...
$(window).scrollTop() vs. $(document).scrollTop()
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@M98 window.scrollTo(x,y)
– Bodman
Aug 3 '17 at 22:13
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