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What is the difference between sql and mysql [closed]
...ople who are Oracle experts, MySQL, SQL Server, etc.
Basically, MySQL is one of many books holding everything, and SQL is how you go about reading that book.
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Get the first element of each tuple in a list in Python [duplicate]
... the documentation on this is hard to come by. I found this link and this one which should explain how it works. Also, the _ is just a normal variable. I could have done x,y and got the same results. However, I did not because it is a Python convention to use a _ for variables that are only plac...
PCH File in Xcode 6
...ate most of what he said. Rob's reputation plays big part of the deal. But one could agree that the answer is subjective, and represents Rob's personal choice not to have a .pch file in his projects.
– user1244109
Aug 25 '15 at 22:07
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Why do I get a SyntaxError for a Unicode escape in my file path?
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This usually happens in Python 3. One of the common reasons would be that while specifying your file path you need "\\" instead of "\". As in:
filePath = "C:\\User\\Desktop\\myFile"
For Python 2, just using "\" would work.
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git revert back to certain commit [duplicate]
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using git revert <commit> will create a new commit that reverts the one you dont want to have.
You can specify a list of commits to revert.
An alternative: http://git-scm.com/docs/git-reset
git reset will reset your copy to the commit you want.
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Undo scaffolding in Rails
...ng rake db:rollback before rails destroy scaffold or if it is not the last one you did rake db:migrate:down VERSION=20080906120000 you can find the number before its name in db/migrate
– Travis Pessetto
Aug 4 '11 at 18:22
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Intellij IDEA. Hide .iml files
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For Mac OS X, one should go to IntelliJ IDEA -> Preferences -> File Types. The rest of the instructions are valid for Mac OS X as well.
– Dennis Laumen
Jul 24 '13 at 6:25
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Remove plot axis values
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Plus one for the lattice explanation!
– Zhubarb
Aug 6 '13 at 10:44
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Infinity symbol with HTML
How can I display an infinity symbol (like the one in the picture) using HTML?
9 Answers
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how do i remove a comma off the end of a string?
...s is a classic question, with two solutions. If you want to remove exactly one comma, which may or may not be there, use:
if (substr($string, -1, 1) == ',')
{
$string = substr($string, 0, -1);
}
If you want to remove all commas from the end of a line use the simpler:
$string = rtrim($string, '...