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When to use enumerateObjectsUsingBlock vs. for
...use whichever pattern you want to use and comes more naturally in the context.
While for(... in ...) is quite convenient and syntactically brief, enumerateObjectsUsingBlock: has a number of features that may or may not prove interesting:
enumerateObjectsUsingBlock: will be as fast or faster than ...
How to select the rows with maximum values in each group with dplyr? [duplicate]
I would like to select a row with maximum value in each group with dplyr.
6 Answers
6
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Identifying and removing null characters in UNIX
I have a text file containing unwanted null characters (ASCII NUL, \0 ). When I try to view it in vi I see ^@ symbols, interleaved in normal text. How can I:
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How do you round a number to two decimal places in C#?
...
Here's some examples:
decimal a = 1.994444M;
Math.Round(a, 2); //returns 1.99
decimal b = 1.995555M;
Math.Round(b, 2); //returns 2.00
You might also want to look at bankers rounding / round-to-even with the following overload:
Math...
error: command 'gcc' failed with exit status 1 while installing eventlet
... need both python-dev and libevent-dev. Thanks!
– Alex Whittemore
May 17 '13 at 2:00
57
For fedor...
Why is the Android emulator so slow? How can we speed up the Android emulator? [closed]
I have got a 2.67 GHz Celeron processor, and 1.21 GB of RAM on a x86 Windows XP Professional machine.
77 Answer...
Retrieve version from maven pom.xml in code
What is the simplest way to retrieve version number from maven's pom.xml in code, i.e., programatically?
11 Answers
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Why does isNaN(“ ”) (string with spaces) equal false?
In JavaScript, why does isNaN(" ") evaluate to false , but isNaN(" x") evaluate to true ?
23 Answers
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PHP - iterate on string characters
... is much more efficient than the answer provided.
– 0x476f72616e
Oct 15 '18 at 3:10
6
Just note t...
Difference between open and codecs.open in Python
There are two ways to open a text file in Python:
8 Answers
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