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How to replace a whole line with sed?
...
Force of habit, it can be ignored in this case - it's used as a global replacement for the line to replace each match rather than just the first. In this case though only the first will be matched because of the .*.
– John...
How to add new item to hash
...ther_hash) # {:item1=>1, :item2=>2, :item3=>3}
In your specific case it could be:
hash = {:item1 => 1}
hash.merge({:item2 => 2}) # {:item1=>1, :item2=>2}
but it's not wise to use it when you should to add just one element more.
Pay attention that merge will replace the val...
Rails mapping array of hashes onto single hash
...PARAM1"=>"testVAL1"}
Reducing an array sort of like sticking a method call between each element of it.
For example [1, 2, 3].reduce(0, :+) is like saying 0 + 1 + 2 + 3 and gives 6.
In our case we do something similar, but with the merge function, which merges two hashes.
[{:a => 1}, {:b ...
What does the “expand” option do in grunt-contrib-copy? The examples all use it but the docs say not
...rt of Grunt, and not specific for grunt-contrib-copy, information about it can be found in Grunt's file configuration API:
Set expand to true to enable the following options:
cwd All src matches are relative to (but don't include) this path.
src Pattern(s) to match, relative to the cwd...
Why do indexes in XPath start with 1 and not 0?
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Array and other collection indexes represent memory offsets, so logically enough they begin at zero. XML and XPATH indexes represent positions and counts, so logically enough they begin at one (and zero is therefore representative of "empty")
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How can I pass a constant value for 1 binding in multi-binding?
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If your value is simply a string, you can specify it as a constant in the Source property of a binding. If it is any other primitive data type, you need to define a static resource and reference this.
Define the sys namespace in the root of the XAML to point to ...
Checking for the correct number of arguments
...>&2
exit 1
fi
Translation: If number of arguments is not (numerically) equal to 1 or the first argument is not a directory, output usage to stderr and exit with a failure status code.
More friendly error reporting:
#!/bin/sh
if [ "$#" -ne 1 ]; then
echo "Usage: $0 DIRECTORY" >&...
Is it Linq or Lambda?
...ions. But LINQ and lambdas are two totally different things, both of which can be used by themselves.
Update: As svick rightly points out, LINQ with query syntax is also implemented using lambda expressions (as mentioned earlier, the compiler allows you to write in query syntax but effectively tran...
Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive
.... when building a website in .net framework 4.0 and convert this into application in IIS then its shows this error
7 Answe...
How to fix error with xml2-config not found when installing PHP from sources?
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I'm using centos 6.4, for me the package was called libxml2-devel
– msknapp
May 17 '14 at 19:27
5
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