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R programming: How do I get Euler's number?
...nAdam Mihalcin
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CodeFile vs CodeBehind
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164
CodeBehind: Needs to be compiled (ASP.NET 1.1 model). The compiled binary is placed in the bin f...
How can I see the current value of my $PATH variable on OS X?
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Tell Ruby Program to Wait some amount of time
... construct longer intervals using the following convenience syntax:
sleep(4.minutes)
# or, even longer...
sleep(2.hours); sleep(3.days) # etc., etc.
# or shorter
sleep(0.5) # half a second
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How to alias a table in Laravel Eloquent queries (or using Query Builder)?
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224
Laravel supports aliases on tables and columns with AS. Try
$users = DB::table('really_long_tab...
How do I validate a date string format in python?
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jamylakjamylak
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mysql :: insert into table, data from another table?
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INSERT INTO action_2_members (campaign_id, mobile, vote, vote_date)
SELECT campaign_id, from...
Rails: Check output of path helper from console
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429
You can show them with rake routes directly.
In a Rails console, you can call app.post_path. ...
John Carmack's Unusual Fast Inverse Square Root (Quake III)
...Quake III source code which calculates the inverse square root of a float, 4x faster than regular (float)(1.0/sqrt(x)) , including a strange 0x5f3759df constant. See the code below. Can someone explain line by line what exactly is going on here and why this works so much faster than the regular i...
What is the PostgreSQL equivalent for ISNULL()
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SELECT CASE WHEN field IS NULL THEN 'Empty' ELSE field END AS field_alias
Or more idiomatic:...