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Restore file from old commit in git
...checkout <tree-ish> -- <pathspec>. As of git v2.23.0 there's a new git restore method which is supposed to assume part of what git checkout was responsible for. See highlights of changes on github blog.
The default behaviour of this command is to restore the state of a working tree with...
What does the `forall` keyword in Haskell/GHC do?
...e forall. An arrow takes two types (argument and result type) and forms a new type (the function type). The argument type is "to the left of" the arrow; it is the arrow's left child in the abstract-syntax tree.
Examples:
In forall a . [a] -> [a], the forall is above the arrow; what's to the ...
How do sessions work in Express.js with Node.js?
...unction () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f5522020%2fhow-do-sessions-work-in-express-js-with-node-js%23new-answer', 'question_page');
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);
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How do I convert a column of text URLs into active hyperlinks in Excel?
...cro and as long as you don't mind an additional column, then just create a new column alongside your column of URLs.
In the new column type in the formula =HYPERLINK(A1) (replacing A1 with whatever cell you are interested in). Then copy the formula down the rest of the 200 entries.
NOTE: This solu...
Do I really need to encode '&' as '&'?
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As far as these examples go, this is nothing new in HTML5. Both <title>Dolce & Gabbana</title> and <p>Dolce & Gabbana</p> are valid HTML 2.0.
– Mathias Bynens
Jan 9 '12 at 14:10
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File name? Path name? Base name? Naming standard for pieces of a path
...about directory which is directory name. Here is my take on it: I'll get a new path to avoid confusion. What is this D:\Fruit\Apple\Pip\? A directory. But if the question is what is the directory or even better directory name of D:\Fruit\Apple\Pip\, the answer is D:\Fruit\Apple\. Hope its clear.
I...
One SVN repository or many?
...ate a customer's code for their comfort, I can quickly and easily create a new repository.
I recently consulted with a relatively large firm on migrating multiple source code control systems to Subversion. They have ~50 projects, ranging from very small to enterprise applications and their corporat...
Initializing a list to a known number of elements in Python [duplicate]
...tialised with values from 0-999. As list does a __len__ first to size the new list it should be fairly efficient.
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docker mounting volumes on host
...our operating system inside your docker container and VOLUME will create a new, empty volume on your host and mount it inside your container.
Example:
You have a Dockerfile that defines a VOLUME /var/lib/mysql.
You build the docker image and tag it some-volume
You run the container
And then,
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O(nlogn) Algorithm - Find three evenly spaced ones within binary string
...y, because it was worth about 40 points. I figure that most of the class didn't solve it correctly, because I haven't come up with a solution in the past 24 hours.
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