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Check if two linked lists merge. If so, where?
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If
by "modification is not allowed" it was meant "you may change but in the end they should be restored", and
we could iterate the lists exactly twice
the following algorithm would be the solution.
First, the numbers. Assume...
Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
...difference between :key => "value" (hashrocket) and key: "value" (Ruby 1.9) notations?
5 Answers
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What does “#pragma comment” mean?
...leave a comment in the generated object file. The comment can then be read by the linker when it processes object files.
#pragma comment(lib, libname) tells the linker to add the 'libname' library to the list of library dependencies, as if you had added it in the project properties at Linker->In...
API vs. Webservice [closed]
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An API (Application Programming Interface) is the means by which third parties can write code that interfaces with other code. A Web Service is a type of API, one that almost always operates over HTTP (though some, like SOAP, can use alternate transports, like SMTP). The official ...
Remove tracking branches no longer on remote
...es branches listed on standard input.
Be careful deleting branches listed by git branch --merged. The list could include master or other branches you'd prefer not to delete.
To give yourself the opportunity to edit the list before deleting branches, you could do the following in one line:
git bra...
How to make a website secured with https
...he users send/receive from your remotely hosted application cannot be read by outside parties if it is intercepted. Even Gmail now turns on HTTPS by default.
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ActiveRecord.find(array_of_ids), preserving order
...suggested something like this:
index = Something.find(array_of_ids).group_by(&:id)
array_of_ids.map { |i| index[i].first }
As efficient as it gets besides letting SQL backend do it.
Edit: To improve on my own answer, you can also do it like this:
Something.find(array_of_ids).index_by(&:...
What's in an Eclipse .classpath/.project file?
...d on Eclipse, rather than Eclipse itself.
The .project file is maintained by the core Eclipse platform, and its goal is to describe the project from a generic, plugin-independent Eclipse view. What's the project's name? what other projects in the workspace does it refer to? What are the builders th...
What is WebKit and how is it related to CSS?
...an I use WebKit features in Firefox for example?
Every browser is backed by a rendering engine to draw the HTML/CSS web page.
IE → Trident (discontinued)
Edge → EdgeHTML (clean-up fork of Trident) (Edge switched to Blink in 2019)
Firefox → Gecko
Opera → Presto (no longer uses Presto sinc...
Why is quicksort better than mergesort?
...y easy to avoid quicksort’s worst-case run time of O(n2) almost entirely by using an appropriate choice of the pivot – such as picking it at random (this is an excellent strategy).
In practice, many modern implementations of quicksort (in particular libstdc++’s std::sort) are actually intros...