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How do I escape ampersands in batch files?
How do I escape ampersands in a batch file (or from the
Windows command line) in order to use the start command to
open web pages with ampersands in the URL?
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How to create an empty file at the command line in Windows?
How to create an empty file at the DOS/Windows command-line?
32 Answers
32
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Is unsigned integer subtraction defined behavior?
...ed type is well-defined:
[...] A computation involving unsigned operands can never overflow,
because a result that cannot be represented by the resulting unsigned integer type is
reduced modulo the number that is one greater than the largest value that can be
represented by the resultin...
how do i remove a comma off the end of a string?
...ine use the simpler:
$string = rtrim($string, ',');
The rtrim function (and corresponding ltrim for left trim) is very useful as you can specify a range of characters to remove, i.e. to remove commas and trailing whitespace you would write:
$string = rtrim($string, ", \t\n");
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Pushing from local repository to GitHub hosted remote
...push your local repository to the remote repository using the git push command after first establishing a relationship between the two with the git remote add [alias] [url] command. If you visit your Github repository, it will show you the URL to use for pushing. You'll first enter something like:...
Deleting a Google App Engine application
...oing to IAM --> Settings --> Shut Down. This button is in the header and a bit tricky to spot. It looks like this:
As of AppEngine SDK 1.2.6 it's possible to delete apps completely. But beware, the app-id won't be usable again.
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What's the best way of structuring data on firebase?
I am new to firebase and I want to know what's the best way of structuring data on it.
3 Answers
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Copy rows from one Datatable to another DataTable?
...ble2.Rows.Add(dr.ItemArray);
}
The above example assumes that dataTable1 and dataTable2 have the same number, type and order of columns.
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How do I change my Ruby version using RVM?
...m/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"
to the same file and it worked!
Of course, you have to restart your terminal after that.
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'echo' without newline in a shell script
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There are multiple versions of the echo command, with different behaviors. Apparently the shell used for your script uses a version that doesn't recognize -n.
The printf command has much more consistent behavior. echo is fine for simple things like echo hello, but I s...