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Count, size, length…too many choices in Ruby?
...ce code) is used, which iterates over all the elements and counts them one-by-one.
In general I'd advise using length (or its alias size) rather than count if you want to know how many elements there are altogether.
Regarding ActiveRecord, on the other hand, there are important differences. chec...
Intro to GPU programming [closed]
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Check out CUDA by NVidia, IMO it's the easiest platform to do GPU programming. There are tons of cool materials to read.
http://www.nvidia.com/object/cuda_home.html
Hello world would be to do any kind of calculation using GPU.
Hope that ...
How can I get the current stack trace in Java?
...aster, because it doesn't need to check this != Thread.currentThread() and bypasses potential JVM overheads of calling it through child-class (Exception extends Throwable)
– Vlad
Apr 9 '15 at 17:01
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How to determine MIME type of file in android?
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This is by far the best answer but it fails miserably if the file name has a special character, in my case an apostrophe! Eg. file name = Don't go baby.mp3. The PatternMatcher inside MimeTypeMap.getFileExtensionFromUrl() can not hand...
Detecting a mobile browser
...window.opera);
return check;
};
The Original Answer
You can do this by simply running through a list of devices and checking if the useragent matches anything like so:
function detectMob() {
const toMatch = [
/Android/i,
/webOS/i,
/iPhone/i,
/iPad/i,
...
Saving results with headers in Sql Server Management Studio
...s->Options in the menu bar to have new query windows use those settings by default.
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CALayer with transparent hole in it
...f you are trying to make a 'guided tutorial' like me. The library provided by @Nick Yap will do the job for you, where by overriding func point(inside point: CGPoint, with event: UIEvent?) -> Bool {} of UIView. Check out his library for more details. But, what you expect is just 'visibility to wh...
How to HTML encode/escape a string? Is there a built-in?
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Checkout the Ruby CGI class. There are methods to encode and decode HTML as well as URLs.
CGI::escapeHTML('Usage: foo "bar" <baz>')
# => "Usage: foo &quot;bar&quot; &lt;baz&gt;"
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Java using enum with switch statement
...e pre-Java 5 approach)
Switch on either a specified id value (as described by heneryville) or the ordinal value of the enum values; i.e. guideView.GUIDE_VIEW_SEVEN_DAY.ordinal()
Determine the enum value represented by the int value and then switch on the enum value.
enum GuideView {
SEVEN_DAY,
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Counter increment in Bash loop not working
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$[...] was used by bash before $((...)) was adopted by the POSIX shell. I'm not sure that it was ever formally deprecated, but I can find no mention of it in the bash man page, and it appears to only be supported for backwards compatibility....