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Open Cygwin at a specific folder
...d your_path" >> ~/.bashrc
The .bashrc script is run when you open a new bash session. The code above with change to the your_path directory when you open a new cygwin session.
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Convert columns to string in Pandas
...unction () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f22005911%2fconvert-columns-to-string-in-pandas%23new-answer', 'question_page');
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...
Java multiline string
... before us, we had nothing before us";
Versus StringBuilder:
String s = new StringBuilder()
.append("It was the best of times, it was the worst of times,\n")
.append("it was the age of wisdom, it was the age of foolishness,\n")
.append("it was the epoch of belief,...
Can you explain the HttpURLConnection connection process?
...object with the target URL of the resource to
// request
URL url = new URL("http://www.example.com/comment");
// instantiate the HttpURLConnection with the URL object - A new
// connection is opened every time by calling the openConnection
// method of the protocol handler for t...
What does a type followed by _t (underscore-t) represent?
...tptr_t, intmax_t, int8_t, uint_least16_t, uint_fast32_t, and so on. These new types are formally defined in <stdint.h> but most often you will use <inttypes.h> which (unusually for standard C headers) includes <stdint.h>. It (<inttypes.h>) also defines macros for use with t...
Color in git-log
...ows the commit at the tip of the current branch e.g. "HEAD -> master", did not work with --decorate=full.
Git 2.9.x+ (Q3 2016) will fix another bug and honor color=auto for %C(auto)
Git 2.10.2 (Oct. 2016) fixes other bugs with commit 82b83da (29 Sep 2016), and commit c99ad27 (17 Sep 2016)...
Redis command to get all available keys?
...he Redis correct database instance.
As it is mentioned in the Redis docs, new connections connect as default to the db 0.
In my case KEYS command was not retrieving results because my database was 1. In order to select the db you want, use SELECT.
The db is identified by an integer.
SELECT 1
KEYS...
Find (and kill) process locking port 3000 on Mac
...
Find:
sudo lsof -i :3000
Kill:
kill -9 <PID>
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Detach (move) subdirectory into separate Git repository
...: This process is so common, that the git team made it much simpler with a new tool, git subtree. See here: Detach (move) subdirectory into separate Git repository
You want to clone your repository and then use git filter-branch to mark everything but the subdirectory you want in your new repo to...
Why use 'git rm' to remove a file instead of 'rm'?
... then do a checkout of master to get out of detached head state because I knew I didn't have any uncommitted changes. If you haven't committed your changes you may want to do a git stash, but I'm relatively new to git so I don't know the exact command. If you have come here in or after 2014, I hope ...