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Convert Set to List without creating new List
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You can use the List.addAll() method. It accepts a Collection as an argument, and your set is a Collection.
List<String> mainList = new ArrayList<String>();
mainList.addAll(set);
EDIT: as respond to the edit of the question.
It is eas...
Assigning default values to shell variables with a single command in bash
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Very close to what you posted, actually:
FOO=${VARIABLE:-default} # If variable not set or null, use default.
Or, which will assign default to VARIABLE as well:
FOO=${VARIABLE:=default} # If variable not set or null, set it to default.
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Getting the HTTP Referrer in ASP.NET
... look with reflector shows that UrlReferrer does a lot more than a simple call to ServerVariables("HTTP_REFERER")
– Diadistis
Nov 23 '10 at 16:42
13
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How to add external library in IntelliJ IDEA?
...ory had only out and src directories in it. So I created a new directory called "libs", and put the jar in it. But I don't know if this is what the direction intended... Then "Refresh project so libs show up in the structure". I could find no command to "refresh". How does one refresh a project...
Objective-C pass block as parameter
...laration style does not make it clear and easy to write the actual method call with a real block argument.
– uchuugaka
Feb 18 '13 at 22:56
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Writing a Python list of lists to a csv file
...It kinda makes sense in hindsight, but not informative of where to look at all.
– Rambatino
May 25 '18 at 7:30
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Get Substring between two characters using javascript
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Trivial solution but handy especially if you want to avoid regular expressions.
– Nikolay Frick
Jun 24 '15 at 20:59
10
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What does the Subversion status symbol “~” mean?
...t has been replaced by different kind of object.
So perhaps it was originally a single file, but you changed it to a directory, or something along those lines?
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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...
Extract date (yyyy/mm/dd) from a timestamp in PostgreSQL
...swered May 26 '11 at 2:40
James AllmanJames Allman
37.4k99 gold badges5252 silver badges6969 bronze badges
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