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Swapping two variable value without using third variable
One of the very tricky questions asked in an interview.
27 Answers
27
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Clone() vs Copy constructor- which is recommended in java [duplicate]
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Clone is broken, so dont use it.
THE CLONE METHOD of the Object class
is a somewhat magical method that does
what no pure Java method could ever
do: It produces an identical copy of
its object. It has been present in the
pr...
Is it better to return null or empty collection?
That's kind of a general question (but I'm using C#), what's the best way (best practice), do you return null or empty collection for a method that has a collection as a return type ?
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IntelliJ: Never use wildcard imports
...his: To force IntelliJ to include each and every import individually. It makes it easier for people to figure out exactly where classes you're using come from.
Click on the Settings "wrench" icon on the toolbar, open "Imports" under "Code Style", and check the "Use single class import" selection. ...
Ruby: What is the easiest way to remove the first element from an array?
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SjoerdSjoerd
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The way to check a HDFS directory's size?
I know du -sh in common Linux filesystems. But how to do that with HDFS?
10 Answers
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iphone: Where the .dSYM file is located in crash report
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Right Click on your archive -> Show in Finder -> Right click on file and click on Show package contents.
Here you will find your .dSYM file.
share
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What's a reliable way to make an iOS app crash?
...t crash when the user performs a particular action that a real user is unlikely to do accidentally.
18 Answers
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What are the pros and cons of the leading Java HTML parsers? [closed]
...s. Unfortunately it's hard to find any information on the strengths and weaknesses of the various libraries. I'm hoping that some people have spent some comparing these libraries, and can share what they've learned.
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swift case falling through
...= 1
default:
result = 3
}
Alternatively, you can use the fallthrough keyword:
var testVal = "hello"
var result = 0
switch testVal {
case "one":
fallthrough
case "two":
result = 1
default:
result = 3
}
sh...