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What are database normal forms and can you give examples? [closed]
...s) and tables (relations) to reduce data redundancy and improve data integrity. (as written on Wikipedia ).
4 Answers
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Check if object exists in JavaScript
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You can safely use the typeof operator on undefined variables.
If it has been assigned any value, including null, typeof will return something other than undefined. typeof always returns a string.
Therefore
if (typeof maybeObject != "undefined") {
alert("GOT THERE");
}
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What does @hide mean in the Android source code?
For the Activity source code , line 3898 (close to the bottom):
3 Answers
3
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CA2202, how to solve this case
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This compiles without warning:
public static byte[] Encrypt(string data, byte[] key, byte[] iv)
{
MemoryStream memoryStream = null;
DESCryptoServiceProvider cryptograph = null;
CryptoStream cryptoStream = nu...
What's the syntax for mod in java
...follow
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edited Jan 9 at 19:45
axel22
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JavaScript hide/show element
How could I hide the 'Edit'-link after I press it? and also can I hide the "lorem ipsum" text when I press edit?
11 Answers...
Does assignment with a comma work?
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There's a lot going on here, but basically, it comes down to the comma operator.
The comma operator evaluates both of its operands (from left to right) and returns the value of the second operand.
This code:
aaa = 1,2,3
Is equivalent to:
aaa = 1;
2;
3;
So...
how to stop browser back button using javascript
...the user from going back in an exam.
I have tried the following script but it stops my timer.
What should I do?
29 Answers
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What is a domain specific language? Anybody using it? And in what way?
I guess I am looking for some kind of intro and see if anybody have used it. Are there any particular advantages of using it?
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What would be C++ limitations compared C language? [closed]
Following are the benefits of C++
32 Answers
32
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