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Rails filtering array of objects by attribute value
So I perform a query to the db and I have a complete array of objects:
5 Answers
5
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What is the difference between location list and quickfix list in vim
The following is from the documentation about the quickfix list and location list. But I am not sure what actually different. The image below shows the same things from the location list and quickfix list. When do I use one or another in vimgrep and lvimgrep.
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How do I comment in CoffeeScript? “/* this */” doesn't work
...l/Ruby/... style # comments:
# This comment goes to the end of the line
# and it won't appear in the "compiled"
# JavaScript version.
You use the block style ### comments when you want a comment to appear in the JavaScript version:
Sometimes you'd like to pass a block comment through to the g...
What is the difference between 0.0.0.0, 127.0.0.1 and localhost?
I am using Jekyll and Vagrant on my mac. I found that Jekyll server will bind to 0.0.0.0:4000 instead of 127.0.0.1:4000 . Also gem server will bind to this address by default. I can still visit it via http://localhost:port . But for Jekyll , it seems that the default setting (e.g. 0.0....
Is it possible to delete an object's property in PHP?
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unset($a->new_property);
This works for array elements, variables, and object attributes.
Example:
$a = new stdClass();
$a->new_property = 'foo';
var_export($a); // -> stdClass::__set_state(array('new_property' => 'foo'))
unset($a->new_property);
var_export($a); // -> st...
ASP.NET web.config: configSource vs. file attributes
...file in an ASP.NET-application some sections of config, like appSettings and connectionStrings , supports the attributes file and configSource .
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npm: disable postinstall script for package
...ch options? This is not described in 'npm help install', 'npm help config' and 'npm help scripts'.
– farwayer
May 6 '14 at 23:55
3
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Detect if homebrew package is installed
...rew packages are installed in the system. Is there a way to use a brew command to achieve that?
4 Answers
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How can I ignore everything under a folder in Mercurial
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I did some experiments and I found that the regex syntax on Windows applies to the path starting with the current repository, with backslashes transformed to slashes.
So if your repository is in E:\Dev for example, hg status will apply the pattern...
How to create a new java.io.File in memory?
...tion then, is “it’s not possible”. This answer tries to be pragmatic and tell what the user could do instead. Andreas’ answer is clearly more thorough and a better (attempt at an) answer.
– haraldK
Jan 17 at 12:11
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