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TypeError: got multiple values for argument
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How to make a variadic macro (variable number of arguments)
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C99 way, also supported by VC++ compiler.
#define FOO(fmt, ...) printf(fmt, ##__VA_ARGS__)
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Rails extending ActiveRecord::Base
...me and effort saved is always extracted back
sometime in the future; with compound interest. These days I limit monkey patching to quickly prototype a solution in the rails console.
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Dynamic LINQ OrderBy on IEnumerable / IQueryable
...he dynamic LINQ library, you just need the code as below. This covers most common scenarios including nested properties.
To get it working with IEnumerable<T> you could add some wrapper methods that go via AsQueryable - but the code below is the core Expression logic needed.
public static IO...
Python Git Module experiences? [closed]
...mentioning for searchers that GitPython does a good job of abstracting the command line tools so that you don't need to use subprocess. There are some useful built in abstractions that you can use, but for everything else you can do things like:
import git
repo = git.Repo( '/home/me/repodir' )
prin...
Subset of rows containing NA (missing) values in a chosen column of a data frame
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How do I wait for an asynchronously dispatched block to finish?
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That’s probably because your completion block is dispatched to the main queue? The queue is blocked waiting for the semaphore and therefore never executes the block. See this question about dispatching on the main queue without blocking.
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Eclipse Workspaces: What for and why?
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I'll provide you with my vision of somebody who feels very uncomfortable in the Java world, which I assume is also your case.
What it is
A workspace is a concept of grouping together:
a set of (somehow) related projects
some configuration pertaining to all these projects
some settings...
In plain English, what does “git reset” do?
...all match B, but the master branch was left behind at C. If you make a new commit D at this point, you'll get this, which is probably not what you want:
- A - B - C (master)
\
D (HEAD)
Remember, reset doesn't make commits, it just updates a branch (which is a pointer to a commit) t...
How can I pass arguments to a batch file?
...ean "all". For example:
echo off
set arg1=%1
set arg2=%2
shift
shift
fake-command /u %arg1% /p %arg2% %*
When you run:
test-command admin password foo bar
the above batch file will run:
fake-command /u admin /p password admin password foo bar
I may have the syntax slightly wrong, but this i...