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How do I enter a multi-line comment in Perl? [duplicate]
...ode and
Better ways to make multi-line comments in Perl for more
detail.
From faq.perl.org[perlfaq7]
How can I comment out a large block
of Perl code?
The quick-and-dirty way to comment out more than one line of Perl is
to surround those lines with Pod directives. You have to put these
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What does a . in an import statement in Python mean?
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That's the new syntax for explicit relative imports. It means import from the current package.
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Is string in array?
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@Brad: That's because its an extension method coming from Enumerable.
– AnthonyWJones
Feb 1 '09 at 17:39
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Undo scaffolding in Rails
... In some cases there are still leftover files that were not deleted from the scaffold. Check your version control, e.g. git status and/or git diff, to see if the destroy command missed anything.
– aaron-coding
Mar 31 '15 at 21:58
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Use grep to report back only line numbers
...her than using grep to get the entire matching line and then removing that from the output with cut or another tool. For completeness, you can also use Perl:
perl -nE '/pattern/ && say $.' filename
or Ruby:
ruby -ne 'puts $. if /pattern/' filename
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Which is a better way to check if an array has more than one element?
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From the manual: Returns the number of elements in var. If var is not an array or an object with implemented Countable interface, 1 will be returned. There is one exception, if var is NULL, 0 will be returned.
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In Subversion can I be a user other than my login name?
...m to work for us.
For http access, the easiest way to log out an SVN user from the command line is:
rm ~/.subversion/auth/svn.simple/*
Hat tip: http://www.yolinux.com/TUTORIALS/Subversion.html
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Get battery level and state in Android
...atteryPct = level / (float)scale;
return (int)(batteryPct*100);
This is from the official docs over at https://developer.android.com/training/monitoring-device-state/battery-monitoring.html.
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