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Long vs Integer, long vs int, what to use and when?
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192
Long is the Object form of long, and Integer is the object form of int.
The long uses 64 bits...
How to grep a text file which contains some binary data?
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11 Answers
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Reflecting parameter name: abuse of C# lambda expressions or syntax brilliance?
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21 Answers
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Reset CSS display property to default value
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A browser's default styles are defined in its user agent stylesheet, the sources of which you ...
Git: How to remove file from index without deleting files from any repository
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120
I do not think a Git commit can record an intention like “stop tracking this file, but do no...
Javascript foreach loop on associative array object
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318
The .length property only tracks properties with numeric indexes (keys). You're using strings ...
Use of def, val, and var in scala
These lines of code outputs 12 , even though person.age=20 was successfully executed. I found that this happens because I used def in def person = new Person("Kumar",12) . If I use var or val the output is 20 . I understand the default is val in scala. This:
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Unable to create/open lock file: /data/mongod.lock errno:13 Permission denied
...t and start as root and yet as root I cant access? I am running on ubuntu 12.04. No other mongo is running
28 Answers
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