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What is the !! (not not) operator in JavaScript?
..., one could simply check for a property using the slightly more performant means of checking if the object in question has a property. There are two ways to do this:
// the native `hasOwnProperty` method
var qux = function(tag, atr) { return document.createElement(tag).hasOwnProperty(atr); }
// th...
What is the meaning of the prefix N in T-SQL statements and when should I use it?
...ode
(the N actually stands for National language character set). Which
means that you are passing an NCHAR, NVARCHAR or NTEXT value, as
opposed to CHAR, VARCHAR or TEXT.
To quote from Microsoft:
Prefix Unicode character string constants with the letter N. Without
the N prefix, the stri...
Error:(1, 0) Plugin with id 'com.android.application' not found
...his.. This error is the first thing you see when starting a new project. I mean, what were they thinking!?
– BdR
Mar 27 '15 at 14:04
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How to kill a process running on particular port in Linux?
... will then eventually completely close the port after about 60 seconds. It means that you can't reuse the port for at least 60 seconds (unless you give the reuse option to the socket).
– Mark Lakata
Sep 3 '15 at 22:44
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How to get the changes on a branch in Git
...sions - it takes one or two revisions, and has defined the A...B syntax to mean how it's defined in the git-diff manpage. If git-diff did not explicitly define A...B, then that syntax would be invalid. Note that the git-rev-parse manpage describes A...B in the "Specifying Ranges" section, and everyt...
Android-java- How to sort a list of objects by a certain value within the object
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"Android-java" is here by no means different than "normal java", so yes Collections.sort() would be a good approach.
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LINQ's Distinct() on a particular property
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@ashes999: I'm not sure what you mean. The code is present in the answer and in the library - depending on whether you're happy to take on a dependency.
– Jon Skeet
Feb 19 '13 at 17:07
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How to change a Git remote on Heroku
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can you explain what you meant here The -u will set this up as tracked. Thanks!
– uday
Jan 17 '13 at 20:07
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When to add what indexes in a table in Rails
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No, because if you do this, only one user can be in one category, but the meaning of category is that you can put more many user into one category. In your User model you have something like this belongs_to :category and in your Category model something like has_many :users. If you have a has_many ...
How to remove focus without setting focus to another control?
...utton, but it also then prevents ANY button from gaining focus. This would mean my non-touch users wouldn't be able to click a button. Is it doing the same for you?
– InteXX
Jun 2 '11 at 2:40
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