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What are the Ruby Gotchas a newbie should be warned about? [closed]
...s.
To denote floating point numbers, one must follow with a zero digit (99.0) or an explicit conversion (99.to_f). It is insufficient to append a dot (99.), because numbers are susceptible to method syntax.
Boolean evaluation of non-boolean data is strict: 0, "" and [] are all evaluated to true. In ...
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...
Maximum execution time in phpMyadmin
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200
I have the same error, please go to
xampp\phpMyAdmin\libraries\config.default.php
Look fo...
Relative paths based on file location instead of current working directory [duplicate]
... to do is get the absolute path of the script (available via ${BASH_SOURCE[0]}) and then use this to get the parent directory and cd to it at the beginning of the script.
#!/bin/bash
parent_path=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
cd "$parent_path"
cat ../some.text
This will make y...
Side-by-side plots with ggplot2
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answered Oct 14 '10 at 16:52
David LeBauerDavid LeBauer
27.5k2727 gold badges101101 silver badges174174 bronze badges
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Git command to display HEAD commit id?
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Jorge Ferreira
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answered Dec 28 '09 at 4:44
Randal SchwartzRandal Schwartz
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Difference between Control Template and DataTemplate in WPF
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answered Aug 27 '09 at 10:20
Matt HamiltonMatt Hamilton
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How can I get enum possible values in a MySQL database?
...gt;query( "SHOW COLUMNS FROM {$table} WHERE Field = '{$field}'" )->row( 0 )->Type;
preg_match("/^enum\(\'(.*)\'\)$/", $type, $matches);
$enum = explode("','", $matches[1]);
return $enum;
}
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Get first key in a (possibly) associative array?
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2019 Update
Starting from PHP 7.3, there is a new built in function called array_key_first() which will retrieve the first key from the given array without resetting the internal pointer. Check out the documentation for more ...
How to get number of rows using SqlDataReader in C#
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answered Sep 5 '09 at 13:25
Henk HoltermanHenk Holterman
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