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Start a git commit message with a hashmark (#)
...
This behaviour is part of git commit's default 'clean-up' behaviour. If you want to keep lines starting with # you can use an alternative clean-up mode.
E.g.
git commit --cleanup=whitespace
If you do this you have to be careful to remove all # lines that you don't ...
Side-by-side plots with ggplot2
...grid)
The function grid.arrange() in the gridExtra package will combine multiple plots; this is how you put two side by side.
require(gridExtra)
plot1 <- qplot(1)
plot2 <- qplot(1)
grid.arrange(plot1, plot2, ncol=2)
This is useful when the two plots are not based on the same data, for exa...
How do I use WebRequest to access an SSL encrypted site using https?
...s this so easier: ServicePointManager.ServerCertificateValidationCallback <- Security.RemoteCertificateValidationCallback (fun _ _ _ _ -> true)
– David Grenier
Jan 10 '12 at 21:25
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How do I create a custom Error in JavaScript?
...ipulate this in any way.
B. The way to do this right is to return the result of the apply from the constructor, as well as setting the prototype in the usual complicated javascripty way:
function MyError() {
var temp = Error.apply(this, arguments);
temp.name = this.name = 'MyError';
...
Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti
...
You should prefer try/except over if/else if that results in
speed-ups (for example by preventing extra lookups)
cleaner code (fewer lines/easier to read)
Often, these go hand-in-hand.
speed-ups
In the case of trying to find an element in a long list by:
try:
x = my...
Rolling or sliding window iterator?
...ow (aka sliding window) iterable over a sequence/iterator/generator. Default Python iteration can be considered a special case, where the window length is 1. I'm currently using the following code. Does anyone have a more Pythonic, less verbose, or more efficient method for doing this?
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How to unit test a Node.js module that requires other modules and how to mock the global require fun
...it's harder to duck-punch spies/stubs/mocks into your code dynamically. Multiple projects that I've done over the last three years use the method described in my answer above. It's the easiest of all methods, though I use it sparingly.
– Elliot Foster
Oct 29 ...
R: += (plus equals) and ++ (plus plus) equivalent from c++/c#/java, etc.?
...ke an infix operator:
`%+=%` = function(e1,e2) eval.parent(substitute(e1 <- e1 + e2))
x = 1
x %+=% 2 ; x
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Splitting a Java String by the pipe symbol using split(“|”)
...void main(String[] args) {
String test = "A|B|C||D";
String[] result = test.split("\\|");
for (String s : result) {
System.out.println(">" + s + "<");
}
}
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im...
Xcode 5 & Asset Catalog: How to reference the LaunchImage?
...Size = CGSizeFromString(dict[@"UILaunchImageSize"]);
if (CGSizeEqualToSize(imageSize, viewSize) && [viewOrientation isEqualToString:dict[@"UILaunchImageOrientation"]])
return dict[@"UILaunchImageName"];
}
return nil;
}
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