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Double exclamation points? [duplicate]
...lse.
!!"foo" // Evaluates to true.
If foo.bar is passed through, then it may not be 0 but some other falsy value. See the following truth table:
Truth Table for javascript
'' == '0' // false
0 == '' // true
0 == '0' // true
false ...
Is there a way to make R beep/play a sound at the end of a script?
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alarm()
The alarm function. It works by sending \a to the console
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Best Practice for Exception Handling in a Windows Forms Application?
I'm currently in the process of writing my first Windows Forms application. I've read a few C# books now so I've got a relatively good understanding of what language features C# has to deal with exceptions. They're all quite theoretical however so what I haven't got yet is a feel for how to translat...
What is declarative programming? [closed]
...eep hearing this term tossed around in several different contexts. What is it?
18 Answers
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Why and when to use Node.js? [duplicate]
Sorry if I'm a bit ambiguous, but I'm trying to understand the real advantages of using Node.js instead of other server-side language.
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How to update Ruby to 1.9.x on Mac?
...ount on my mac and I am trying to update to the current version of ruby on it (1.9.2) from the snow leopard default of 1.8.7. Can somebody point me to tutorial or explain the best method to update Ruby on my mac from 1.8 to 1.9.2? Thanks
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Is storing a delimited list in a database column really that bad?
Imagine a web form with a set of check boxes (any or all of them can be selected). I chose to save them in a comma separated list of values stored in one column of the database table.
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Is it possible to write data to file using only JavaScript?
I want to Write Data to existing file using JavaScript.
I don't want to print it on console.
I want to Actually Write data to abc.txt .
I read many answered question but every where they are printing on console.
at some place they have given code but its not working.
So please can any one help me H...
NSUserDefaults - How to tell if a key exists
...small iPhone app, and I am using NSUserDefaults as my data persistence. It only has to keep track of a few things, such as some names and some numbers so I figure I might as well keep it simple.
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Setting Objects to Null/Nothing after use in .NET
...et all the objects to null ( Nothing in VB.NET) once you have finished with them?
15 Answers
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