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How to remove a field from params[:something]
... this question was written newer versions of Rails have added the extract! and except eg:
new_params = params.except[the one I wish to remove]
This is a safer way to 'grab' all the params you need into a copy WITHOUT destroying the original passed in params (which is NOT a good thing to do as it ...
Open file dialog box in JavaScript
... <input type='file' /> control itself. But a div is placed over that and css styles are applied to get that feel. Opacity of the file control is set to 0 so that it appears that the dialog window is opened when clicking on the div.
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What's the best way to join on the same table twice?
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First, I would try and refactor these tables to get away from using phone numbers as natural keys. I am not a fan of natural keys and this is a great example why. Natural keys, especially things like phone numbers, can change and frequently so....
How to check if Receiver is registered in Android?
...nregisterReceiver(BroadcastReceiver) passing itself as the argument after handling the Intent that it receives.
There is a small chance that the receiver's onReceive(Context, Intent) method is called
more than once, since it is registered with multiple IntentFilters, creating the potential for a...
What does T&& (double ampersand) mean in C++11?
I've been looking into some of the new features of C++11 and one I've noticed is the double ampersand in declaring variables, like T&& var .
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Getting parts of a URL (Regex)
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A single regex to parse and breakup a
full URL including query parameters
and anchors e.g.
https://www.google.com/dir/1/2/search.html?arg=0-a&arg1=1-b&arg3-c#hash
^((http[s]?|ftp):\/)?\/?([^:\/\s]+)((\/\w+)*\/)([\w\-\.]+[^#?\s...
Add directives from directive in AngularJS
... a directive that takes care of adding datepicker , datepicker-language and ng-required="true" .
7 Answers
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Why use sprintf function in PHP?
..., specify number format (hex, decimal, octal), number of decimals, padding and more. Google for printf and you'll find plenty of examples. The wikipedia article on printf should get you started.
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How to link C++ program with Boost using CMake
...his code helps.
Here's the official documentation about FindBoost.cmake.
And the actual FindBoost.cmake (hosted on GitHub)
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Regular Expression to match only alphabetic characters
... expression which will match a string that only has alphabetic characters, and that alone.
5 Answers
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