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Run a single migration file
... of the ruby file:
rails console
>> require "db/migrate/20090408054532_add_foos.rb"
>> AddFoos.up
Note: newer versions of rails may require AddFoos.new.up rather than AddFoos.up.
An alternative way (without IRB) which relies on the fact that require returns an array of class names:
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Maximum size of an Array in Javascript
...ccording to the ECMA-262 5th Edition specification is bound by an unsigned 32-bit integer due to the ToUint32 abstract operation, so the longest possible array could have 232-1 = 4,294,967,295 = 4.29 billion elements.
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Python constructors and __init__
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edited Feb 7 '18 at 20:31
Solomon Ucko
2,42022 gold badges1212 silver badges2727 bronze badges
answer...
Should accessing SharedPreferences be done off the UI Thread?
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answered Dec 6 '10 at 23:07
Brad FitzpatrickBrad Fitzpatrick
3,41111 gold badge1616 silver badges99 bronze badges
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When should I use nil and NULL in Objective-C?
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13
technically, they are exactly equal, you can send messages to both nil and to NULL. Idiomatically though nil is usually used to represent an...
How do I properly escape quotes inside HTML attributes?
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355
" is the correct way, the third of your tests:
<option value="&quot;asd">t...
POST request via RestTemplate in JSON
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edited Sep 6 '18 at 20:37
arghtype
3,8061111 gold badges3838 silver badges5353 bronze badges
answered...
String Resource new line /n not possible?
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382
use a blackslash not a forwardslash. \n
<?xml version="1.0" encoding="utf-8"?>
<reso...
Adding a UILabel to a UIToolbar
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edited Sep 10 '13 at 6:56
community wiki
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Why is String.chars() a stream of ints in Java 8?
...answer
– Adam Dyga
Mar 16 '14 at 16:39
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