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jQuery append() vs appendChild()
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105
The main difference is that appendChild is a DOM method and append is a jQuery method. The sec...
Visual Studio keyboard shortcut to automatically add the needed 'using' statement
... the menu. I find this easier to type than the alternative, Alt + Shift + F10.
This can be re-bound to something more familiar by going to Tools > Options > Environment > Keyboard > Visual C# > View.QuickActions
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Python list iterator behavior and next(iterator)
...ition to i being printed each iteration:
>>> a = iter(list(range(10)))
>>> for i in a:
... print(i)
... next(a)
...
0
1
2
3
4
5
6
7
8
9
So 0 is the output of print(i), 1 the return value from next(), echoed by the interactive interpreter, etc. There are just 5 iterations,...
How is Python's List Implemented?
...ame time regardless of index:
...>python -m timeit --setup="x = [None]*1000" "x[500]"
10000000 loops, best of 3: 0.0579 usec per loop
...>python -m timeit --setup="x = [None]*1000" "x[0]"
10000000 loops, best of 3: 0.0566 usec per loop
I would be astounded if IronPython or Jython used link...
R apply function with multiple parameters
.... Friedman) you can use mapply as follows:
vars1<-c(1,2,3)
vars2<-c(10,20,30)
mult_one<-function(var1,var2)
{
var1*var2
}
mapply(mult_one,vars1,vars2)
which gives you:
> mapply(mult_one,vars1,vars2)
[1] 10 40 90
...
Converting integer to string in Python
...
>>> str(10)
'10'
>>> int('10')
10
Links to the documentation:
int()
str()
Conversion to a string is done with the builtin str() function, which basically calls the __str__() method of its parameter.
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++someVariable vs. someVariable++ in JavaScript
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answered Aug 12 '10 at 16:31
Jon SkeetJon Skeet
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Please explain about insertable=false and updatable=false in reference to the JPA @Column annotation
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edited Aug 24 '16 at 10:52
answered Sep 27 '10 at 16:10
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Struct inheritance in C++
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edited Sep 10 '15 at 0:34
b4hand
8,26133 gold badges3939 silver badges4747 bronze badges
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