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Should I use Java's String.format() if performance is important?
...ass StringTest{
public static void main( String[] args ){
int i = 0;
long prev_time = System.currentTimeMillis();
long time;
for( i = 0; i< 100000; i++){
String s = "Blah" + i + "Blah";
}
time = System.currentTimeMillis() - prev_time;
System.out.println(...
Difference between case object and object
...
109
Case classes differ from regular classes in that they get:
pattern matching support
default i...
Visual Studio C# statement collapsing
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Starting with Visual Studio 2017, statement collapsing is built-in.
There are several extensions that perform this task for pre-2017 versions of VS, starting with VS 2010 version:
C# outline
C# outline
2012 (@MSDN)
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2013 (@MSDN)
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2...
What happens to C# Dictionary lookup if the key does not exist?
...esponding value
}
else
{
// Key wasn't in dictionary; "value" is now 0
}
(Using ContainsKey and then the the indexer makes it look the key up twice, which is pretty pointless.)
Note that even if you were using reference types, checking for null wouldn't work - the indexer for Dictionary<...
In the shell, what does “ 2>&1 ” mean?
... |
edited May 9 '18 at 20:18
Ricardo
2,45811 gold badge2121 silver badges4141 bronze badges
answered M...
What is the difference between sed and awk? [closed]
...(e.g. "(231.45)") using this (which has room for improvement):
sed 's/-\([0-9.]\+\)/(\1)/g' inputfile
I would use awk when the text looks more like rows and columns or, as awk refers to them "records" and "fields". If I was going to do a similar operation as above, but only on the third field in ...
Does JavaScript have the interface type (such as Java's 'interface')?
...
answered Sep 14 '10 at 15:26
cHaocHao
76.3k1818 gold badges132132 silver badges164164 bronze badges
...
How to get response status code from jQuery.ajax?
... get the HTTP response code from a jQuery.ajax call. Then, if the code is 301 (Moved Permanently), display the 'Location' response header:
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Volley Android Networking Library
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204
$ git clone https://android.googlesource.com/platform/frameworks/volley
$ cd volley
$ android u...