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Is there a performance difference between a for loop and a for-each loop?
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Yes, but that counter is now visible outside of the loop. Sure, it's a simple fix but so is for-each!
– Indolering
Nov 4 '12 at 5:19
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Differences between fork and exec
...d process (parent) as its parent PID (PPID). Because the two processes are now running exactly the same code, they can tell which is which by the return code of fork - the child gets 0, the parent gets the PID of the child. This is all, of course, assuming the fork call works - if not, no child is c...
Force browser to clear cache
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SO is using GET arguments now.
– Saeb Amini
Nov 23 '11 at 16:36
61
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How to get input type using jquery?
...a radio, I need to get which is checked, and if it is a checkbox I need to now which are checked, and if it is a drop down I need to know which is selected, and I if it is a text/textarea I need to know the values.
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How would Git handle a SHA-1 collision on a blob?
...The question of using SHA-256 is regularly mentioned, but not act upon for now (2012).
Note: starting 2018 and Git 2.19, the code is being refactored to use SHA-256.
Note (Humor): you can force a commit to a particular SHA1 prefix, with the project gitbrute from Brad Fitzpatrick (bradfitz).
g...
Bubble Sort Homework
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To explain why your script isn't working right now, I'll rename the variable unsorted to sorted.
At first, your list isn't yet sorted. Of course, we set sorted to False.
As soon as we start the while loop, we assume that the list is already sorted. The idea is this: as ...
Action bar navigation modes are deprecated in Android L
... class (such as setNavigationMode() , addTab() , selectTab() , &c). are now deprecated.
10 Answers
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numpy: most efficient frequency counts for unique values in an array
...y 1.9, the easiest and fastest method is to simply use numpy.unique, which now has a return_counts keyword argument:
import numpy as np
x = np.array([1,1,1,2,2,2,5,25,1,1])
unique, counts = np.unique(x, return_counts=True)
print np.asarray((unique, counts)).T
Which gives:
[[ 1 5]
[ 2 3]
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Check synchronously if file/directory exists in Node.js
...ated but fs.existsSync() is no longer deprecated. So you can safely use it now.
Original answer from 2010:
You can use statSync or lstatSync (docs link), which give you an fs.Stats object. In general, if a synchronous version of a function is available, it will have the same name as the async ver...
jQuery append() vs appendChild()
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Do you know why append is "safe" and appendChild is not? What does domManip do?
– Rob Fox
Mar 17 '14 at 8:29
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