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How do I create and access the global variables in Groovy?
...finition or in Groovy 1.8 we can add the @Field annotation.
import groovy.transform.Field
var1 = 'var1'
@Field String var2 = 'var2'
def var3 = 'var3'
void printVars() {
println var1
println var2
println var3 // This won't work, because not in script scope.
}
...
Does Python optimize tail recursion?
...n Tail Calls (2009-04-27)
You can manually eliminate the recursion with a transformation like this:
>>> def trisum(n, csum):
... while True: # Change recursion to a while loop
... if n == 0:
... return csum
... n, csum = n - 1, csum + n ...
Initial bytes incorrect after Java AES/CBC decryption
...eption, InvalidAlgorithmParameterException
{
return AES.transform(Cipher.ENCRYPT_MODE, keyBytes, ivBytes, messageBytes);
}
public static byte[] decrypt(final byte[] keyBytes, final byte[] ivBytes, final byte[] messageBytes) throws InvalidKeyException, InvalidAlgorithmPara...
How to center absolute div horizontally using CSS?
... want to specify a width.
.element
{
position: absolute;
left: 50%;
transform: translateX(-50%);
}
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Math - mapping numbers
...u would like Y to fall between C and D, you can apply the following linear transform:
Y = (X-A)/(B-A) * (D-C) + C
That should give you what you want, although your question is a little ambiguous, since you could also map the interval in the reverse direction. Just watch out for division by zero a...
Bomb dropping algorithm
...uld have exactly the same minimum vertex cover for original vertices. Such transformation allows to align graph vertices to arbitrary positions on the grid.
If we place graph vertices only to even rows and columns (in such a way that no two edges incident to one vertex form an acute angle), inser...
What are the undocumented features and limitations of the Windows FINDSTR command?
...ASCII characters that display as dots on XP are the same as those that are transformed when supplied on the command line. See the "Character limits for command line parameters - Extended ASCII transformation" section, later in this post
Control characters and extended ASCII are not converted to dots...
Customizing the template within a Directive
..."Any operation which can be shared among the instance of directives [e.g., transforming the template DOM] should be moved to the compile function for performance reasons."
– Mark Rajcok
Sep 12 '12 at 2:27
...
What's a good hex editor/viewer for the Mac? [closed]
... | less
To use Vim as a hex editor:
Open the file in Vim.
Run :%!xxd (transform buffer to hex)
Edit.
Run :%!xxd -r (reverse transformation)
Save.
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When & why to use delegates? [duplicate]
... to do late evaluation of code blocks, like a function where you have some Transform action, and want to have a BeforeTransform and an AfterTransform action that you can evaluate within your Transform function, without having to know whether the BeginTransform is filled, or what it has to transform....