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What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
... say: "I want nokogiri as long as it’s greater than version 1.4.4", etc. Now suppose that I have set up my Gemfile 8 months ago and I successful setup my app with this requirement. 8 months ago nokogiri version was 1.4.4. My rails apps was running perfectly without any problems with this version.
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Does a javascript if statement with multiple conditions test all of them?
...bles, each function may take a long time, and not only is it important to know this short circuits, but in what order. For example:
if (takesSeconds() && takesMinutes())
is much better than
if (takesMinutes() && takesSeconds())
if both are equally likely to return false.
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How can I add a PHP page to WordPress?
...ant you to use this approach. Integrating WordPress with Your Website
I know many people have answered this question, and it already has an accepted answer, but here is a nice approach for a .php file within the root of your WordPress site (or technically anywhere you want in your site), that you ...
When to use AtomicReference in Java?
...or the java.util.concurrent framework rather than bare Atomic* unless you know what you're doing.
Two excellent dead-tree references which will introduce you to this topic:
Herlihy's excellent Art of Multiprocessor Programming
Java Concurrency in Practice
Note that (I don't know if this has ...
Do subclasses inherit private fields?
...nate way. But it is still manifestly true that subclasses froggle (because now we don't have a word) the private fields of their parent class.
– DigitalRoss
Jan 17 '11 at 19:12
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Mockito.any() pass Interface with Generics
...gument or type parameter because of enhanced type inference. The compiler now knows from the target type (the type of the method argument) that you actually mean Matchers.<AsyncCallback<ResponseX>>any(), which is the pre-Java 8 solution.
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How can I get the list of files in a directory using C or C++?
...Ronkko. In Unix, it is a standard header.
UPDATE 2017:
In C++17 there is now an official way to list files of your file system: std::filesystem. There is an excellent answer from Shreevardhan below with this source code:
#include <string>
#include <iostream>
#include <filesystem>...
List directory tree structure in python?
I know that we can use os.walk() to list all sub-directories or all files in a directory. However, I would like to list the full directory tree content:
...
Repository access denied. access via a deployment key is read-only
...o set SSH Keys.
I simply deleted the Deployment Key, I don't need any for now. And it worked
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How to calculate the difference between two dates using PHP?
...ects can be compared using comparison operators.
$date1 = new DateTime("now");
$date2 = new DateTime("tomorrow");
var_dump($date1 == $date2); // bool(false)
var_dump($date1 < $date2); // bool(true)
var_dump($date1 > $date2); // bool(false)
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