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How to check if a variable exists in a FreeMarker template?
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In case anyone else was thrown off by this, the #if syntax should be surrounded by less than and greater than characters rather than brackets. for instance: <#if userName??>
– Cameron
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How can I move a single directory from a git repository to a new repository whilst maintaining the h
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You can use git filter-branch to rewrite the history of a project. From the documentation:
To rewrite the repository to look as
if foodir/ had been its project root,
and discard all other history:
git filter-branch --sub...
Should I use the Reply-To header when sending emails as a service to others?
Suppose we have an application that acts as a middleman, allowing Company A to send reports to their customers.
3 Answers
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Assign multiple columns using := in data.table, by group
...st(dim(get(objectName))),by=objectName]. Trouble is that as.list has call overhead and also copies the small vector. If efficiency is a problem as number of groups rises then please let us know.
– Matt Dowle
May 21 '14 at 11:49
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Create Directory if it doesn't exist with Ruby
...; ["foo/bar"]
Edit2: you do not have to use FileUtils, you may do system call (update from @mu is too short comment):
> system 'mkdir', '-p', 'foo/bar' # worse version: system 'mkdir -p "foo/bar"'
=> true
But that seems (at least to me) as worse approach as you are using external 'tool' w...
What is “point free” style (in Functional Programming)?
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@kaleidic: Because without having variable names, you need to compose partially applied functions. That's what we call currying (or, more precisely, what is made possible through currying)
– Dario
Oc...
Does .NET have a way to check if List a contains all items in List b?
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You can use LINQ to Objects in Mono, I believe... but it would be helpful if you'd state the requirements in the question to start with. Which version of Mono are you using?
– Jon Skeet
Oct ...
How do I download a tarball from GitHub using cURL?
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Why lately there are certificates problems on raw.github.com? I had problems to install homebrew and rvm on a new machine. I used to copy and paste from the homepage and was working. Now I get the certificate problem: ruby -e "$(curl -fsSL raw.github....
“icon-bar” in twitter bootstrap navigation bar
I cannot understand what the following code means in terms of icon-bar :
3 Answers
3
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What is the difference between object keys with quotes and without quotes?
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Actually, the quotes can make a difference if you use a numeric literal as a property name. For example, obj = { 12e34: true }; is not the same as obj = { '12e34': true };. The former would require you to access the property through obj['1.2e+35'...