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In Clojure, when should I use a vector over a list, and the other way around?
... are not seqs, but Lists are. I'm not sure what the rationale is for using one over the other. It seems that vectors are used the most, but is there a reason for that?
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Rails has_many with alias name
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You could do this two different ways. One is by using "as"
has_many :tasks, :as => :jobs
or
def jobs
self.tasks
end
Obviously the first one would be the best way to handle it.
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The difference between Classes, Objects, and Instances
... I really appreciate your answer sir, and I almost got it, just one more question. We say-"Whenever the compiler hits the 0 argument constructor it creates a instance of a class.". In this context what is really created an instance or an object? An object I guess and we use the word "...
Bootstrap 3 and Youtube in Modal
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This should not be the accepted answer. One must not edit source css files.
– emix
Nov 7 '19 at 12:10
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How can I create an array with key value pairs?
...ply try this and it worked for me
class line_details {
var $commission_one=array();
foreach($_SESSION['commission'] as $key=>$data){
$row= explode('-', $key);
$this->commission_one[$row['0']]= $row['1'];
}
}
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What do you call the -> operator in Ruby?
...c = ->(x){ x+1 }
succ.call(2)
The code is equivalent to the following one.
succ = lambda { |x| x + 1 }
succ.call(2)
Informally, I have heard it being called stabby lambda or stabby literal.
share
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How to stop tracking and ignore changes to a file in Git?
I have cloned a project that includes some .csproj files. I don't need/like my local csproj files being tracked by Git (or being brought up when creating a patch), but clearly they are needed in the project.
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What's the best way to bundle static resources in a Go program? [closed]
...CSS/JS with the executable, so users only have to download and worry about one file?
4 Answers
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Why are you not able to declare a class as static in Java?
...een objects and types. While there are many cars (objects), there is only one Car class (type). Declaring something as static means that you are operating in the "type" space. There is only one. The top-level class keyword already defines a type in the "type" space. As a result "public static c...
add column to mysql table if it does not exist
...or to 5.0, so if you need to support MySQL 4.1, this solution isn't good.
One solution used by frameworks that use database migrations is to record in your database a revision number for the schema. Just a table with a single column and single row, with an integer indicating which revision is curr...