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How can I format my grep output to show line numbers at the end of the line, and also the hit count?
... sometimes man page can take many pages. And this is hard to read all of them
– Eugen Konkov
May 22 '18 at 13:44
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Rake just one migration
...n a single migration that changed and needed to be re-run independently of all other migrations. Fire up the console and do this:
>> require 'db/migrate/your_migrations.rb'
=> ["YourMigrations"]
>> YourMigrations.up
=> etc... as the migration runs
>> YourMigration.down
Mor...
How to set default value for form field in Symfony2?
..., it will also always force the value under any context. Not what I would call a "default value"...
– Hubert Perron
Apr 3 '13 at 18:25
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Would you, at present date, use JBoss or Glassfish (or another) as Java EE server for a new project?
...ce them otherwise? If so, there's your answer.
Do I have to use EJBs? Really? Avoid them if at all possible--they are really only needed for very large, enterprise-class systems. Remember that they are merely tools, and big ones at that (can anyone say "Golden Sledgehammer"?). They are heavily...
Collect successive pairs from a stream
...eamEx library which extends standard streams provides a pairMap method for all stream types. For primitive streams it does not change the stream type, but can be used to make some calculations. Most common usage is to calculate differences:
int[] pairwiseDiffs = IntStreamEx.of(input).pairMap((a, b)...
Django: accessing session variables from within a template?
...ple are still finding it helpful, more than three years after it was originally written. Please note however, that although the view code above is still valid, nowadays there is a much simpler way of doing this. render() is a function very similar to render_to_response(), but it uses RequestContext ...
ImportError: No module named pip
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After installing ez_setup, you should have easy_install available. To install pip just do:
easy_install pip
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What is the “right” way to iterate through an array in Ruby?
PHP, for all its warts, is pretty good on this count. There's no difference between an array and a hash (maybe I'm naive, but this seems obviously right to me), and to iterate through either you just do
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if checkbox is checked, do this
...me power of jQuery to access properties of an element. The article specifically treats the use of .attr("id") but in the case that #checkbox is an <input type="checkbox" /> element the issue is the same for $(...).attr('checked') (or even $(...).is(':checked')) vs. this.checked.
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Converting from IEnumerable to List [duplicate]
...to a Generic List.
//ArrayList Implements IEnumerable interface
ArrayList _provinces = new System.Collections.ArrayList();
_provinces.Add("Western");
_provinces.Add("Eastern");
List<string> provinces = _provinces.Cast<string>().ToList();
If you're using Generic version IEnumerable&...