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When do I use the PHP constant “PHP_EOL”?
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Yes, PHP_EOL is ostensibly used to find the newline character in a cross-platform-compatible way, so it handles DOS/Unix issues.
Note that PHP_EOL represents the endline character for the current system. For instance, it will not find a Windows endline when e...
Bomb dropping algorithm
...tric, except for the weird corners, and even there no blast radius is a subset of another. Note that if this were a line (as Colonel Panic discusses) instead of a closed loop the solution is trivial. The end points must be reduced to 0, and it never harms you to bomb the points adjacent to the en...
How do I undo the most recent local commits in Git?
...o
$ git commit -m "Something terribly misguided" # (1)
$ git reset HEAD~ # (2)
<< edit files as necessary >> # (3)
$ git add ... # (4)
$ git commit -c ORIG_HEAD ...
Are there any O(1/n) algorithms?
...of 1, albeit contrived and tongue-in-cheek answer:
Do any two people in a set have the same birthday? When n exceeds 365, return true. Although for less than 365, this is O(n ln n). Perhaps not a great answer since the problem doesn't slowly get easier but just becomes O(1) for n > 365.
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Is it possible to have multiple styles inside a TextView?
Is it possible to set multiple styles for different pieces of text inside a TextView?
18 Answers
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How to strip all non-alphabetic characters from string in SQL Server?
...Returns VarChar(1000)
AS
Begin
Declare @KeepValues as varchar(50)
Set @KeepValues = '%[^a-z]%'
While PatIndex(@KeepValues, @Temp) > 0
Set @Temp = Stuff(@Temp, PatIndex(@KeepValues, @Temp), 1, '')
Return @Temp
End
Call it like this:
Select dbo.RemoveNonAlphaCharacters(...
How do I syntax check a Bash script without running it?
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In bash's manpage, under "SHELL BUILTIN COMMANDS / set", -n is documented, and as the beginning of the manpage states, bash interprets all single-character options that set does.
– ephemient
Oct 5 '08 at 20:55
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Adding git branch on the Bash command prompt
...and-substitution:
Bash:
PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
Zsh:
setopt PROMPT_SUBST ; PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
git < 1.9.3
But note that only git 1.9.3 (May 2014) or later allows you to safely display that branch name(!)
See commit 8976500 by Richard Hansen (richardh...
How to concatenate two strings in C++?
... to which I would like to add the .txt extension so that I can open the file present in the directory.
8 Answers
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What's wrong with using == to compare floats in Java?
...ff by a little bit, so they may not report as exactly equal. For example, setting a float to "6.1" and then printing it out again, you may get a reported value of something like "6.099999904632568359375". This is fundamental to the way floats work; therefore, you don't want to compare them using e...