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Why is #!/usr/bin/env bash superior to #!/bin/bash?
...bash in preference to #!/bin/bash . I've even seen one enterprising individual suggest using #!/bin/bash was wrong and bash functionality would be lost by doing so.
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Are parallel calls to send/recv on the same socket valid?
I know that a good design should avoid this, but I am not clear how these system APIs will behave. I am unable to find a good documentation also for the same.
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LISTAGG in Oracle to return distinct values
... 5 Jack I need to select col1 and the LISTAGG of col2(column 3 is not considered). While i do that i will get something like this as the result od LISTAGG :->[2,2,3,4,5] I need to remove the duplicate'2' here.I Need only the distinct values of col2 against col1.
– Priyanth
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What does “./bin/www” do in Express 4.x?
...plication server and port settings are written and everything others like middleware and routing is defined in ./app.js file.
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ASP.NET: This method cannot be called during the application's pre-start initialization stage
...It automatically defines security and membership rules so you have to override them before you add custom ones. Tricky.
– Jonathan Allen
May 25 '11 at 8:46
4
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Scala: What is the difference between Traversable and Iterable traits in Scala collections?
...; break }
}
result
}
}
In contrast, the Iterable subtract overrides this implementation and calls find on the Iterator, which simply stops iterating once the element is found:
trait Iterable {
override /*TraversableLike*/ def find(p: A => Boolean): Option[A] =
iterator.find(p)
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What is the canonical way to determine commandline vs. http execution of a PHP script?
...at list updated as new web servers and interfaces are added.
Also, Bobby said:
I'm intrigued as to why the doc. example inspects the first 3 characters, whilst the description states the string should be exactly "CGI"
The description for the example states:
This example checks for the substring c...
Reuse Cucumber steps
...looks like this:
Given /^I login successfully$/
step "I login with valid credentials"
end
Old, deprecated method (for reference):
You can call steps from other steps like this:
Given /^I login successfully$/
Given "I login with valid credentials"
Then "I should be logged in"
end
I...
Naming convention for utility classes in Java
When writing utility classes in Java, what are some good guidelines to follow?
5 Answers
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What is the difference between a pseudo-class and a pseudo-element in CSS?
...ncept is introduced to permit selection based on information that lies outside of the document tree or that cannot be expressed using the other simple selectors.
A pseudo-class always consists of a "colon" (:) followed by the name of the pseudo-class and optionally by a value between parenthese...