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How to execute a Ruby script in Terminal?
...set everything up that I need on my Mac (Ruby, Rails, Homebrew, Git, etc), and I've even written a small program. Now, how do I execute it in Terminal? I wrote the program in Redcar and saved it as a .rb, but I don't know how to execute it through Terminal. I want to run the program and see if it ac...
How to check if object has any properties in JavaScript?
...ws:
for(var prop in ad) {
if (ad.hasOwnProperty(prop)) {
// handle prop as required
}
}
It is important to use the hasOwnProperty() method, to determine whether the object has the specified property as a direct property, and not inherited from the object's prototype chain.
Edit
...
How do I install from a local cache with pip?
...irtualenv environments. Is there a way that I can download a package once and then have pip install from a local cache?
...
Get a random item from a JavaScript array [duplicate]
How do I get random item from items ?
13 Answers
13
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Disable HttpClient logging
...egration test suite. The default logging for HttpClient is extremely noisy and I can't seem to turn it off. I've tried following the instructions here but none of them make any difference.
...
Ruby custom error classes: inheritance of the message attribute
... you don't have to pass it to the constructor:
class MyCustomError < StandardError
attr_reader :object
def initialize(object)
@object = object
end
end
begin
raise MyCustomError.new("an object"), "a message"
rescue MyCustomError => e
puts e.message # => "a message"
puts e....
Dynamic Sorting within SQL Stored Procedures
...
Yeah, it's a pain, and the way you're doing it looks similar to what I do:
order by
case when @SortExpr = 'CustomerName' and @SortDir = 'ASC'
then CustomerName end asc,
case when @SortExpr = 'CustomerName' and @SortDir = 'DESC'
then...
Why doesn't Python have a sign function?
I can't understand why Python doesn't have a sign function. It has an abs builtin (which I consider sign 's sister), but no sign .
...
Create unique constraint with null columns
...(user_id, menu_id, recipe_id), you cannot base CLUSTER on a partial index, and queries without a matching WHERE condition cannot use the partial index. (It seems unlikely you'd want a FK reference three columns wide - use the PK column instead).
If you need a complete index, you can alternatively d...
'ssh-keygen' is not recognized as an internal or external command
...f Git For Windows, whose releases include PortableGit-2.4.3.1-2nd-release-candidate-64-bit.7z
c:\path\to\PortableGit-2.4.3.1-2nd-release-candidate-64-bit\usr\bin\ssh-keygen.exe
That means the %PATH% must include c:\path\to\PortableGit-2.4.3.1-2nd-release-candidate-64-bit\usr\bin (without the ssh-...