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Syntax for creating a two-dimensional array
...ut int array[][] = new int[3][]; VS int array[][] = new int[][3]; ?? which one is legal as I have read both version somewhere.
– roottraveller
Jun 13 '17 at 9:40
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How to randomize (or permute) a dataframe rowwise and columnwise?
...meter replace=FALSE (the default) to sample(...) ensures that sampling is done without replacement which accomplishes a row wise shuffle.
Shuffle column-wise:
> df3 <- df1[,sample(ncol(df1))]
> df3
c a b
1 0 1 1
2 0 1 0
3 0 0 1
4 0 0 0
...
Can I mask an input text in a bat file?
...in the passwd environment variable after the code has run.
Now, as mentioned, scriptpw.dll is available only up to XP/2003. In order to rectify this, you can simply copy the scriptpw.dll file from the Windows\System32 folder of an XP/2003 system to the Winnt\System32 or Windows\System32 folder on...
Insert results of a stored procedure into a temporary table
...w what the difference between this and @Aaron Alton's solution above. This one seems far simpler, but I am unsure as to any other implications.
– funkymushroom
Jun 1 '12 at 17:57
1...
How to set java_home on Windows 7?
...ent Variables in 'System' in the control panel and made two new variables, one for user variables and one for system variables. Both were named JAVA_HOME and both pointing to
...
How to delete multiple buffers in Vim?
...L files with :bd *.xml . However, Vim does not allow this (E93: More than one match...).
8 Answers
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Best way to do multiple constructors in PHP
... And could not we also make __construct() private, to prevent someone from ocassionally allocating a "non-ininitialized" instance?
– mlvljr
Apr 13 '11 at 15:08
3
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The smallest difference between 2 Angles
...
although one might want to do a % 360, e.g. if I had the angle 0 and the target angle 721, the correct answer would be 1, the answer given by the above would be 361
– Tom J Nowell
Oct 25 '11 at 1...
Why is processing a sorted array faster than processing an unsorted array?
... guess left. If it alternates, then you alternate your guesses. If it goes one way every three times, you guess the same...
In other words, you try to identify a pattern and follow it. This is more or less how branch predictors work.
Most applications have well-behaved branches. So modern branch pre...
#pragma once vs include guards? [duplicate]
...er deal with #pragma once will yield faster compiles and is less error prone when copying and pasting. It is also slightly less ugly ;)
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