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Array.Add vs +=
...nd the added value. For example, to add an element with a
value of 200 to the array in the $a variable, type:
$a += 200
Source: about_Arrays
+= is an expensive operation, so when you need to add many items you should try to add them in as few operations as possible, ex:
$arr = 1..3 ...
Should I delete the cgi-bin folder in a subdomain I just created?
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answered Feb 23 '10 at 20:56
janmoesenjanmoesen
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sed beginner: changing all occurrences in a folder
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edited May 25 '09 at 3:13
answered May 25 '09 at 2:51
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Difference between make and build in Android Studio
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answered Dec 4 '13 at 13:01
Grzegorz ŻurGrzegorz Żur
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Strings in a DataFrame, but dtype is object
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HYRYHYRY
78.9k2020 gold badges157157 silver badges168168 bronze badges
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Why do you have to call .items() when iterating over a dictionary in Python?
...-- which is a check I believe I may have performed, or wanted to perform, 100 times more rarely than what if k in C actually means, checking the presence of the key only and completely ignoring the value.
On the other hand, wanting to loop just on keys is quite common, e.g.:
for k in thedict:
...
What makes Lisp macros so special?
...le syntax for a common case. The line
divisibleByTwo = [x for x in range(10) if x % 2 == 0]
yields a list containing all even numbers between 0 and 9. Back in the Python 1.5 days there was no such syntax; you'd use something more like this:
divisibleByTwo = []
for x in range( 10 ):
if x % 2 ...
undefined method `source_index' for Gem:Module (NoMethodError)
... What it came down to was ruby-1.9.3-p385 had installed RubyGems version 2.0.2 for me, and 1.9.3-p327 has RubyGems v1.8.23 installed.
Gem.source_index has been deprecated for a while, but since Rails 2.3 is not getting any updates except critical security patches, this will never get fixed. RubyGem...
Delete Local Folder in TFS
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Jun 19 '14 at 7:43
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What is the difference between packaged_task and async
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edited May 21 '18 at 10:17
answered Aug 9 '13 at 9:44
Z...