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In Ruby on Rails, what's the difference between DateTime, Timestamp, Time and Date?
...TETIME is formatted as YYYY-MM-DD HH:MM:SS. Valid ranges go from the year 1000 to the year 9999 (and everything in between. While TIMESTAMP looks similar when you fetch it from the database, it's really a just a front for a unix timestamp. Its valid range goes from 1970 to 2038. The difference here,...
How does node.bcrypt.js compare hashed and plaintext passwords without the salt?
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answered Oct 23 '12 at 6:00
BillBill
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“git rm --cached x” vs “git reset head -- x”?
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There are three places where a file, say, can be - the tree, the index and the working copy. Whe...
php is null or empty?
...LL) {...}
Note the ===.
When use ==, as you did, PHP treats NULL, false, 0, the empty string, and empty arrays as equal.
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What is the difference between “Include Directories” and “Additional Include Directories”
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This is awkwardness that got introduced in VS2010. The VC++ Directories settings used to be located in Tools + Options, Projects and Solutions, VC++ Directories. Global settings that applied to every project that was built on the machine. It is still there but points ...
What does iota of std::iota stand for?
...ι is the lower-case Greek letter iota.
In the quote above, I typed ι, U+03B9, “GREEK SMALL LETTER IOTA”, but Unicode actually has a dedicated code point for APL's iota: ⍳ is U+2373, “APL FUNCTIONAL SYMBOL IOTA”.
In response to the demands of commenters, I shall further address the et...
Cocoa Touch: How To Change UIView's Border Color And Thickness?
...layer.borderColor = [UIColor redColor].CGColor;
view.layer.borderWidth = 3.0f;
You also need to link with QuartzCore.framework to access this functionality.
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Ruby, Difference between exec, system and %x() or Backticks
...gument to this method. For example:
>> system("date")
Wed Sep 4 22:03:44 CEST 2013
=> true
The invoked program will use the current STDIN, STDOUT and STDERR objects of your Ruby program. In fact, the actual return value is either true, false or nil. In the example the date was printed t...
What does the @ symbol represent in objective-c?
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answered Aug 25 '08 at 8:36
Chris HansonChris Hanson
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How to lock orientation during runtime
...nsor/slider driven.
More info here: http://www.devx.com/wireless/Article/40792
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