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How do I fix the “You don't have write permissions into the /usr/bin directory” error when installin
I'm trying to install Rails 3 on a brand new MacBook Pro running OS X 10.6.3, Ruby 1.8.7, and Rails 2.3.5 and I'm wondering if I've hosed myself. So far, I've run these commands:
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What is the difference between Ruby 1.8 and Ruby 1.9
..._s
=> "[1, 2, 3]"
Ruby 1.8.6
irb(main):001:0> [1,2,3].to_s
=> "123"
Action: Use .join instead
Colon No Longer Valid In When Statements
Ruby 1.9
irb(main):001:0> case 'a'; when /\w/: puts 'word'; end
SyntaxError: (irb):1: syntax error, unexpected ':',
expecting keyword_then or '...
Ruby: How to get the first character of a string
...ot that you should be using 1.8 anymore anyway!--but when this answer was posted it was still quite common):
puts 'Smith'[0] # prints 83
Of course, if you're not doing it on a regular basis, then defining the method might be overkill, and you could just do it directly:
puts last_name[0...
iPhone/iOS JSON parsing tutorial [closed]
...hing would be nice if it built. Fails for me with 44 errors in Xcode 4 in OS X Lion.
– Sarah Vessels
Jul 20 '12 at 17:04
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Javascript - How to extract filename from a file input control
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vog's answer is really close to the 100% accurate answer to the question (except needs to strip the extension.) A filename is no different from any other string.
– Jon Watte
May 21 '16 at 19:38
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What is the best collation to use for MySQL with PHP? [closed]
..., `notes`) VALUES
(1, NULL, '0000-00-00 00:00:00', '2014-08-25 03:00:36', '1234567890', '12345678901234567890', '1234567890123456789012345678901234567890', '1234567890123456789012345678901234567890', '123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789...
App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
...但TaifunSQLite是收费的，美刀。
.aix 拓展下载：
cn.fun123.SQLite.aix
中文网测试案例
.aia 测试源码下载：
TestSqlite.aia
打开数据库
一般可以在屏幕初始化时打开db。如果数据库已打开，则不...
Get the date (a day before current time) in Bash
... answered Nov 10 '09 at 10:17
ghostdog74ghostdog74
269k4848 gold badges233233 silver badges323323 bronze badges
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ImportError: numpy.core.multiarray failed to import
...ommand and find it on your computer. I'm sure you can rm the directory on OSX via terminal, but I did it manually and it solved my issue.
– alexfigtree
Jan 18 '16 at 21:29
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What exactly does the .join() method do?
...t array.array('c', random.sample(string.ascii_letters, 20 - len(strid)))
.tostring() + strid
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