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Check if a method exists
... +1 For [MyClass instancesRespondToSelector]. I needed it inside a init creation method: When subclassing maybe is necessary to call one super init method instead of others (deprecated ones), since self has not been created yet and respondsToSelector will always return NO.
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Using print statements only to debug
...e me write a lot of print statements to verify if it's all going right and identify the points of failure. But, generally, outputting so much information is not a good practice. How do I use the print statements only when I want to debug and let them be skipped when I don't want them to be printed? ...
Uninstall ReSharper 4.5
... but too expensive for a beginner or hobbyst...
– Saeid Yazdani
Nov 10 '11 at 8:02
1
Agreed that ...
Scala downwards or decreasing for loop?
...
Scala provides many ways to work on downwards in loop.
1st Solution: with "to" and "by"
//It will print 10 to 0. Here by -1 means it will decremented by -1.
for(i <- 10 to 0 by -1){
println(i)
}
2nd Solution: With "t...
backbone.js - events, knowing what was clicked
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
Capistrano - clean up old releases
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You can use the :keep_releases variable to override the default of 5. Check this out.
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What is a 'SAM type' in Java?
...nable, Callable, etc. Lambda expressions, a new feature in Java 8, are considered a SAM type and can be freely converted to them.
For example, with an interface like this:
public interface Callable<T> {
public T call();
}
You can declare a Callable using lambda expressions like this:
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How to create a new branch from a tag?
...
If this doesn't work because of "<tag> is not a valid commit" or a similar error (often when working on a shared repository), refer to stackoverflow.com/questions/35979642/…
– SalmonKiller
Nov 9 '18 at 23:04
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Rails: Logging the entire stack trace of an exception
...ered Aug 15 '10 at 7:05
darkliquiddarkliquid
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Node.js check if path is file or directory
....isBlockDevice()
stats.isCharacterDevice()
stats.isSymbolicLink() (only valid with fs.lstat())
stats.isFIFO()
stats.isSocket()
NOTE:
The above solution will throw an Error if; for ex, the file or directory doesn't exist.
If you want a true or false approach, try fs.existsSync(dirPath) && f...