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Best way to iterate through a Perl array
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If you only care about the elements of @Array, use:
for my $el (@Array) {
# ...
}
or
If the indices matter, use:
for my $i (0 .. $#Array) {
# ...
}
Or, as of perl 5.12.1, you can use:
while (my ($i, $el) = each @Array) {
# ...
}
If y...
Skipping Iterations in Python
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The real question: Is leavin out the 'g' in 'lookin' Pythonic?
– Mason Gardner
Jan 12 '17 at 18:22
add a comment
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How do I undo a checkout in git?
I just checked out an earlier commit from my local git repo. I haven't made any changes to it, I was just looking at it. Now I want to go back to my latest commit - how do I do that?
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Practical example where Tuple can be used in .Net 4.0?
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Probably worth pointing out from MSDN: "Any public static members of this type are thread safe. Any instance members are not guaranteed to be thread safe."
– Matt Borja
Nov 17 '15 at 20:43
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Using SQL Server 2008 and SQL Server 2005 and date time
...as a BeforeBuild event
<Target Name="BeforeBuild">
<!--Check out BD.edmx, Another.edmx, all configs-->
<Exec Command="$(SolutionDir)\Library\tf checkout /lock:none $(ProjectDir)Generation\DB.edmx" />
<Exec Command="$(SolutionDir)\Library\tf checkout /lock:none $(Pro...
Pick a random element from an array
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Agreed. Arrays crash on out-of-bound so that they can be performant. Calling into arc4random makes any performance gains completely insignificant. I've updated the answer.
– Berik
Aug 4 '17 at 0:11
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How to resize a VirtualBox vmdk file
I've run out of space on a virtual machine disk which is a vmdk and need to resize the virtual image. Resizing with the command
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How to send emails from my Android application?
... an email application with the recipient, subject, and body already filled out. It's up to the email app to do the sending.
– Jeremy Logan
Jul 11 '11 at 20:36
8
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How do I clone a single branch in Git?
... more at "Is git clone --depth 1 (shallow clone) more useful than it makes out?".
"Undoing" a shallow clone is detailed at "Convert shallow clone to full clone" (git 1.8.3+)
# unshallow the current branch
git fetch --unshallow
# for getting back all the branches (see Peter Cordes' comment)
git con...
LINQ Single vs First
...lter the values to be returned based on the predicate. However, I checked out the disassembly, and Where(predicate).Single() has three extra instructions in the simple case I made. So, while I'm no IL expert, but it appears that customers.Single(predicate) should be more efficient.
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