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Way to get number of digits in an int?
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357
Your String-based solution is perfectly OK, there is nothing "un-neat" about it. You have to re...
Why charset names are not constants?
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edited Sep 10 '13 at 13:59
Mr_and_Mrs_D
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What is the meaning of the planned “private protected” C# access modifier?
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edited Apr 4 '14 at 18:52
Kobi
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answered ...
Trim string in JavaScript?
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Samuel Dauzon
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answered Jan 31 '09 at 15:26
Pradeep Kumar Mish...
What is a lambda (function)?
... do things like this.
Python
def adder(x):
return lambda y: x + y
add5 = adder(5)
add5(1)
6
As you can see from the snippet of Python, the function adder takes in an argument x, and returns an anonymous function, or lambda, that takes another argument y. That anonymous function allows you to...
UIView Hide/Show with animation
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5
@robmathers , I just test your code , above two code just work when button.hidden = NO, for fade in situation; have no animation effect fo...
How do you add a Dictionary of items into another Dictionary
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Dima
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answered Jun 5 '14 at 5:14
shucaoshucao
...
How JavaScript closures are garbage collected
...f_ = null; and it will be gone.
Update
I have tried it in Chrome 30, FF25, Opera 12 and IE10 on Windows.
The standard doesn't say anything about garbage collection, but gives some clues of what should happen.
Section 13 Function definition, step 4: "Let closure be the result of creating a new...
Numpy array dimensions
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513
It is .shape:
ndarray.shape
Tuple of array dimensions.
Thus:
>>> a.shape
(2,...
Fastest way to replace NAs in a large data.table
...le) # v1.6.6
require(gdata) # v2.8.2
set.seed(1)
dt1 = create_dt(2e5, 200, 0.1)
dim(dt1)
[1] 200000 200 # more columns than Ramnath's answer which had 5 not 200
f_andrie = function(dt) remove_na(dt)
f_gdata = function(dt, un = 0) gdata::NAToUnknown(dt, un)
f_dowle = function(dt) { ...