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When should iteritems() be used instead of items()?
... of iteritems() in all places? Why was iteritems() removed from Python 3? Seems like a terrific and useful method. What's the reasoning behind it?
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Substitute multiple whitespace with single whitespace in Python [duplicate]
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3 Answers
3
Active
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How does Trello access the user's clipboard?
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edited Jul 11 '14 at 13:54
Aadit M Shah
63.4k2323 gold badges136136 silver badges261261 bronze badges
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Usage of __slots__?
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1083
In Python, what is the purpose of __slots__ and what are the cases one should avoid this?
TLDR...
Creating an array of objects in Java
... A[4];
...creates 4 A references, similar to doing this:
A a1;
A a2;
A a3;
A a4;
Now you couldn't do a1.someMethod() without allocating a1 like this:
a1 = new A();
Similarly, with the array you need to do this:
a[0] = new A();
...before using it.
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How to replace part of string by position?
...;
var aStringBuilder = new StringBuilder(theString);
aStringBuilder.Remove(3, 2);
aStringBuilder.Insert(3, "ZX");
theString = aStringBuilder.ToString();
An alternative is to use String.Substring, but I think the StringBuilder code gets more readable.
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How to write a large buffer into a binary file in C++, fast?
...g), pFile);
}
fclose(pFile);
return 0;
}
I just timed 8GB in 36sec, which is about 220MB/s and I think that maxes out my SSD. Also worth to note, the code in the question used one core 100%, whereas this code only uses 2-5%.
Thanks a lot to everyone.
Update: 5 years have passed it's ...
How to combine date from one field with time from another field - MS SQL Server
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Liam
21.3k1717 gold badges8989 silver badges146146 bronze badges
answered Mar 31 '09 at 8:54
Lieven Keersmaek...
Vagrant reverse port forwarding?
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134
When you run vagrant ssh, it's actually using this underlying command:
ssh -p 2222 -o UserKnow...
Return value in a Bash function
...s to be exactly what you want.
Here is an example:
function fun1(){
echo 34
}
function fun2(){
local res=$(fun1)
echo $res
}
Another way to get the return value (if you just want to return an integer 0-255) is $?.
function fun1(){
return 34
}
function fun2(){
fun1
local res=$?
echo ...