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Best practices/performance: mixing StringBuilder.append with String.concat
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edited Apr 9 '12 at 20:21
answered Apr 9 '12 at 20:00
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Iterating through a list in reverse order in java
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edited Jan 20 '10 at 15:54
answered Jan 20 '10 at 15:34
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Facebook database design?
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90
Keep a friend table that holds the UserID and then the UserID of the friend (we will call it Fri...
Difference between null and empty (“”) Java String
... can still invoke methods or functions on it like
a.length()
a.substring(0, 1)
and so on.
If the String equals null, like b, Java would throw a NullPointerException if you tried invoking, say:
b.length()
If the difference you are wondering about is == versus equals, it's this:
== compares ...
Removing duplicate rows in Notepad++
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answered Oct 18 '10 at 10:46
Colin PickardColin Pickard
42.2k1111 gold badges9191 silver badges142142 bronze badges
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How to clear variables in ipython?
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208
%reset seems to clear defined variables.
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Where do I find the bashrc file on Mac?
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– Michael Dimmitt
Feb 4 '17 at 16:05
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Best Practices for securing a REST API / web service [closed]
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answered Aug 11 '08 at 8:45
Greg HewgillGreg Hewgill
783k167167 gold badges10841084 silver badges12221222 bronze badges
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Node.js check if file exists
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230
Why not just try opening the file ? fs.open('YourFile', 'a', function (err, fd) { ... })
anyway ...