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Check for null in foreach loop
Is there a nicer way of doing the following:
I need a check for null to happen on file.Headers before proceeding with the loop
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What is the difference between typeof and instanceof and when should one be used vs. the other?
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Use instanceof for custom types:
var ClassFirst = function () {};
var ClassSecond = function () {};
var instance = new ClassFirst();
typeof instance; // object
typeof instance == 'ClassFirst'; // false
instance instanceof Object; // true
in...
How do you create a yes/no boolean field in SQL server?
What is the best practice for creating a yes/no i.e. Boolean field when converting from an access database or in general?
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How can I list all collections in the MongoDB shell?
In the MongoDB shell, how do I list all collections for the current database that I'm using?
22 Answers
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Intellij IDEA crashed, and now throws an error
I work in Intellij IDEA, but my computer freezes so I turn off my computer. (long click power button) When I turned on computer and start IntelliJ IDEA I had this error:
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How do I detect when someone shakes an iPhone?
...ne. I don't particularly care how they shake it, just that it was waved vigorously about for a split second. Does anyone know how to detect this?
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Setting action for back button in navigation controller
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this is a slick, clean, nice and very well thought workaround
– boliva
Nov 25 '11 at 16:19
6
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The 'Access-Control-Allow-Origin' header contains multiple values
...side. As the client is hosted on a different domain as the server, I need CORS. It works for $http.post(url, data). But as soon as I authenticate the user and make a request via $http.get(url), I get the message
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How do you allow spaces to be entered using scanf?
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People (and especially beginners) should never use scanf("%s") or gets() or any other functions that do not have buffer overflow protection, unless you know for certain that the input will always be of a specific format (and perhaps not even then).
Remember than scanf stands for "scan f...
Five equal columns in twitter bootstrap
...o understand how the 5 column grid is being used here:
http://web.archive.org/web/20120416024539/http://domain7.com/mobile/tools/bootstrap/responsive
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