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How can two strings be concatenated?
...("Hello", "world", sep=" ")
[1] "Hello world"
where the argument sep specifies the character(s) to be used between the arguments to concatenate,
or collapse character vectors
> x <- c("Hello", "World")
> x
[1] "Hello" "World"
> paste(x, collapse="--")
[1] "Hello--World"
where the ar...
What are conventions for filenames in Go?
...y compiled and run by the go test tool.
Files with os and architecture specific suffixes automatically follow those same constraints, e.g. name_linux.go will only build on linux, name_amd64.go will only build on amd64. This is the same as having a //+build amd64 line at the top of the file
See th...
SQL Server - transactions roll back on error?
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@AlexMcMillan The DROP PROCEDURE statement modifies the database structure, unlike INSERT, which just works with the data. So it cannot be wrapped in a transaction. I'm oversimplifying, but basically that's how it is.
– eksortso
Jun...
Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
I am doing some numerical optimization on a scientific application. One thing I noticed is that GCC will optimize the call pow(a,2) by compiling it into a*a , but the call pow(a,6) is not optimized and will actually call the library function pow , which greatly slows down the performance. (In ...
Laravel Eloquent ORM Transactions
The Eloquent ORM is quite nice, though I'm wondering if there is an easy way to setup MySQL transactions using innoDB in the same fashion as PDO, or if I would have to extend the ORM to make this possible?
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What's the meaning of 'origin' in 'git push origin master'
...me for an original remote repository. You can use foobar instead of origin if you like.
– skuro
Aug 25 '12 at 0:21
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Brew update failed: untracked working tree files would be overwritten by merge
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Had similar issue to the original question but with different conflicting files. Just resetting was sufficient to let me update and resolve the issue.
– David
Aug 24 '13 at 12:26
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How to check the differences between local and github before the pull [duplicate]
Before using pull, I want to check if there are any differences between my local and github master.
3 Answers
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Label Alignment in iOS 6 - UITextAlignment deprecated
...ctor. That it might break in the future is just bad design from Apple, and if they break it I would rather have compilation errors than risking that the alignment gets wrong without me noticing.
– Robin Andersson
Nov 14 '12 at 12:45
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What is the difference between user variables and system variables?
What is the difference between user variables such as PATH , TMP , etc. and system variables?
5 Answers
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