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Rails raw SQL example
How can I convert this code to raw sql and use in rails? Because When I deploy this code in heroku,there is a request timeout error.I think this will be faster if I use raw sql.
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Most concise way to convert a Set to a List
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List<String> list = new ArrayList<String>(listOfTopicAuthors);
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git working on two branches simultaneously
...ture-A feature/A. This checks out the branch feature/A in it's own new dedicated directory, cool-app-feature-A.
That replaces an older script contrib/workdir/git-new-workdir, with a more robust mechanism where those "linked" working trees are actually recorded in the main repo new $GIT_DIR/worktree...
How can I detect if a browser is blocking a popup?
Occasionally, I've come across a webpage that tries to pop open a new window (for user input, or something important), but the popup blocker prevents this from happening.
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How to serialize an object to XML without getting xmlns=“…”?
...y for me to serialize an object in .NET without the XML Namespaces automatically serializing also? It seems that by default .NET believes the XSI and XSD namespaces should be included, but I don't want them there.
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Why no generics in Go?
...ty interface to construct containers (with explicit unboxing) mean in many cases it is possible to write code that does what generics would enable, if less smoothly.
This remains an open issue.
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Including JavaScript class definition from another file in Node.js
I'm writing a simple server for Node.js and I'm using my own class called User which looks like:
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How to check if object (variable) is defined in R?
... to check if some variable is defined in R - without getting an error. How can I do this?
6 Answers
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Method can be made static, but should it?
...ance methods
10.2.5 Static and instance members of the C# Language Specification explains the difference. Generally, static methods can provide a very small performance enhancement over instance methods, but only in somewhat extreme situations (see this answer for some more details on that).
Rule ...
How can I reverse a NSArray in Objective-C?
...olution using reverseObjectEnumerator.
For reversing a mutable array, you can add the following category to your code:
@implementation NSMutableArray (Reverse)
- (void)reverse {
if ([self count] <= 1)
return;
NSUInteger i = 0;
NSUInteger j = [self count] - 1;
while (i &...