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Calling a function of a module by using its name (a string)
...attr(foo, 'bar')
result = method_to_call()
You could shorten lines 2 and 3 to:
result = getattr(foo, 'bar')()
if that makes more sense for your use case.
You can use getattr in this fashion on class instance bound methods, module-level methods, class methods... the list goes on.
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How to express a NOT IN query with ActiveRecord/Rails?
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316
Rails 4+:
Article.where.not(title: ['Rails 3', 'Rails 5'])
Rails 3:
Topic.where('id NOT I...
How to loop backwards in python? [duplicate]
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302
range() and xrange() take a third parameter that specifies a step. So you can do the following...
read subprocess stdout line by line
... Rômulo CecconRômulo Ceccon
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Make a float only show two decimal places
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13 Answers
13
Active
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How to clear an ImageView in Android?
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543
I used to do it with the dennis.sheppard solution:
viewToUse.setImageResource(0);
it works bu...
How do I output an ISO 8601 formatted string in JavaScript?
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463
There is already a function called toISOString():
var date = new Date();
date.toISOString(); /...
PHP expects T_PAAMAYIM_NEKUDOTAYIM?
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347
It’s the double colon operator :: (see list of parser tokens).
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Single vs Double quotes (' vs ")
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391
The w3 org said:
By default, SGML requires that all attribute values be delimited using ei...
How to kill all processes matching a name?
...s, for example, if we see these lines in ps aux:
apache 24268 0.0 2.6 388152 27116 ? S Jun13 0:10 /usr/sbin/httpd
apache 24272 0.0 2.6 387944 27104 ? S Jun13 0:09 /usr/sbin/httpd
apache 24319 0.0 2.6 387884 27316 ? S Jun15 0:04 /usr/sbin/httpd
We ca...