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uppercase first character in a variable with bash
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15 Answers
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Detail change after Git pull
...ing to master. You can refer to the previous position of master by master@{1} (or even master@{10.minutes.ago}; see the specifying revisions section of the git-rev-parse man page), so that you can do things like
See all of the changes: git diff master@{1} master
See the changes to a given file: gi...
Uninstall / remove a Homebrew package including all its dependencies
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Specify custom Date format for colClasses argument in read.table/read.csv
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You can write your own function that accepts a string and converts it to a Date using the form...
What are “named tuples” in Python?
Reading the changes in Python 3.1 , I found something... unexpected:
11 Answers
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Is it possible for a unit test to assert that a method calls sys.exit()
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155
Yes. sys.exit raises SystemExit, so you can check it with assertRaises:
with self.assertRaise...
How to stop /#/ in browser with react-router?
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For the versions 1, 2 and 3 of react-router, the correct way to set the route to URL mapping scheme is by passing a history implementation into the history parameter of <Router>. From the histories documentation:
In a nutshell, a hi...
How to get a key in a JavaScript object by its value?
...ct).find(key => object[key] === value);
}
const map = {"first" : "1", "second" : "2"};
console.log(getKeyByValue(map,"2"));
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How to undo 'git reset'?
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Short answer:
git reset 'HEAD@{1}'
Long answer:
Git keeps a log of all ref updates (e.g., checkout, reset, commit, merge). You can view it by typing:
git reflog
Somewhere in this list is the commit that you lost. Let's say you just typed git reset HE...
How to change the decimal separator of DecimalFormat from comma to dot/point?
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edited Sep 19 '17 at 18:46
Francisco M
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answered Feb 19...