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javascript set a variable if undefined
...will assign the default value if the retrieved value is falsey, as opposed to truly undefined. It would therefore not only match undefined but also null, false, 0, NaN, "" (but not "0").
If you want to set to default only if the variable is strictly undefined then the safest way is to write:
var...
What is the difference between sed and awk? [closed]
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sed is a stream editor. It works with streams of characters on a per-line basis. It has a primitive programming language that includes goto-style loops and simple conditionals (in addition to pattern matching and address matching). There are es...
How to call a parent method from child class in javascript?
I've spent the last couple of hours trying to find a solution to my problem but it seems to be hopeless.
8 Answers
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D Programming Language in the real world? [closed]
...or real world applications? If so, what are you using it for? I can't seem to find anything big on the web written in D.
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Can you test google analytics on a localhost address?
I have to test out my new GA account on my local machine.
12 Answers
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Fastest way to determine if record exists
As the title suggests... I'm trying to figure out the fastest way with the least overhead to determine if a record exists in a table or not.
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What is the purpose of class methods?
...s not Java , and so I've just spent a while turning all my Class methods into functions.
17 Answers
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How can I use PowerShell with the Visual Studio Command Prompt?
...een using Beta 2 for a while now and it's been driving me nuts that I have to punt to cmd.exe when running the VS2010 Command Prompt. I used to have a nice vsvars2008.ps1 script for Visual Studio 2008. Anyone have a vsvars2010.ps1 or something similar?
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input type=“submit” Vs button tag are they interchangeable?
input type="submit" and button tag are they interchangeable? or if there is any difference then When to use input type="submit" and when button ?
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How to check if an activity is the last one in the activity stack for an application?
I want to know if user would return to the home screen if he exit the current activity.
10 Answers
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