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How to format a number as percentage in R?
One of the things that used to perplex me as a newby to R was how to format a number as a percentage for printing.
10 Answe...
How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators dif
..." is a string
1 == "1": true // "1" gets casted to an integer, which is 1
"foo" === "foo": true // both operands are strings and have the same value
Warning: two instances of the same class with equivalent members do NOT match the === operator. Example:
$a = new stdClass();
$a->foo = "bar";
$b ...
How can I use xargs to copy files that have spaces and quotes in their names?
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You can combine all of that into a single find command:
find . -iname "*foobar*" -exec cp -- "{}" ~/foo/bar \;
This will handle filenames and directories with spaces in them. You can use -name to get case-sensitive results.
Note: The -- flag passed to cp prevents it from processing files st...
MVC Razor view nested foreach's model
...='SomeProperty'>.
For a more complicated example, like model=>model.Foo.Bar.Baz.FooBar, it might generate <input name="Foo.Bar.Baz.FooBar" value="[whatever FooBar is]" />
Make sense? It is not just the work that the Func<> does, but how it does its work is important here.
(Note ...
Given a class, see if instance has method (Ruby)
...since respond_to? restricts itself to public methods by default, as well.
Foo.public_instance_methods.include?('bar')
In Ruby 1.9, though, those methods return arrays of symbols.
Foo.public_instance_methods.include?(:bar)
If you're planning on doing this often, you might want to extend Module ...
Preserve line endings
...is will fix the problem with cygwin's sed on Windows.
Example: sed -b 's/foo/bar/'
If you wish to match the end of the line, remember to match, capture and copy the optional carriage return.
Example: sed -b 's/foo\(\r\?\)$/bar\1/'
From the sed man page:
-b --binary
This opti...
Redirect all output to file [duplicate]
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That part is written to stderr, use 2> to redirect it. For example:
foo > stdout.txt 2> stderr.txt
or if you want in same file:
foo > allout.txt 2>&1
Note: this works in (ba)sh, check your shell for proper syntax
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Best way to generate random file names in Python
... is a good, or the best way to generate some random text to prepend to a file(name) that I'm saving to a server, just to make sure it does not overwrite. Thank you!
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RegEx: Grabbing values between quotation marks
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@steve: this would also match, incorrectly, "foo\". The look ahead trick makes the ? quantifier possessive (even if the regex flavor doesn't support the ?+ syntax or atomic grouping)
– Robin
Sep 11 '14 at 13:33
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Count the number of commits on a Git branch
I found this answer already: Number of commits on branch in git
but that assumes that the branch was created from master.
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