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Remove duplicate entries using a Bash script [duplicate]
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Perl one-liner similar to @kev's awk solution:
perl -ne 'print if ! $a{$_}++' input
This variation removes trailing whitespace before comparing:
perl -lne 's/\s*$//; print if ! $a{$_}++' input
This variation edits the file in-place:
perl -i -ne 'print if ! $a{$_}++' input
This variation e...
Combine two ActiveRecord::Relation objects
...lation.or(last_name_relation)
† Only in ActiveRecord 5+; for 4.2 install the where-or backport.
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Wildcards in jQuery selectors
I'm trying to use a wildcard to get the id of all the elements whose id begin with "jander". I tried $('#jander*') , $('#jander%') but it doesn't work..
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Why does one use dependency injection?
...e virtual functions and interfaces (although I do once in a blue moon) and all my configuration is magically serialized into a class using json.net (sometimes using an XML serializer).
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Check if image exists on server using JavaScript?
...stance I have images 1.jpg - 5.jpg loaded into the html page. I'd like to call a JavaScript function every minute or so that would roughly do the following scratch code...
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Using jQuery to center a DIV on the screen
...ou need the jqueryUI library to use .position() as a function. Check out: api.jqueryui.com/position/
– jake
Jun 15 '13 at 17:04
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Where is array's length property defined?
...uage itself.
10.7. Array Members
The members of an array type are all of the following:
The public final field length, which contains the number of components of the array. length may be positive or zero.
The public method clone, which overrides the method of the same name in clas...
How do I parse JSON with Ruby on Rails? [duplicate]
...ot identifiable in your module
require 'json'
#Assuming data from bitly api is stored in json_data here
json_data = '{
"errorCode": 0,
"errorMessage": "",
"results":
{
"http://www.foo.com":
{
"hash": "e5TEd",
"shortKeywordUrl": "",
"shortUrl": "http://whateve...
How to have an automatic timestamp in SQLite?
... overrided OnModelCreating, inside your context class, and add this Fluent API code:
modelBuilder.Entity<YourEntity>()
.Property(b => b.Timestamp)
.ValueGeneratedOnAddOrUpdate()
.IsConcurrencyToken()
.ForSqliteHasDefaultValue...
Using javadoc for Python documentation [closed]
... from the Napolean documentation linked above.
A comprehensive example on all types of docstrings here.
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