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What's the difference between HEAD^ and HEAD~ in Git?
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Rules of thumb
Use ~ most of the tim>me m> — to go back a number of generations, usually what you want
Use ^ on m>me m>rge commits — because they have two or more (imm>me m>diate) parents
Mnemonics:
Tilde ~ is almost linear in appearance and wants to go backward in a s...
Use underscore inside Angular controllers
...re.factory('_', ['$window', function($window) {
return $window._; // assum>me m>s underscore has already been loaded on the page
}]);
And then you can ask for the _ in your app's module:
// Declare it as a dependency of your module
var app = angular.module('app', ['underscore']);
// And then inject...
Using R to list all files with a specified extension
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files <- list.files(pattern = "\\.dbf$")
$ at the end m>me m>ans that this is end of string. "dbf$" will work too, but adding \\. (. is special character in regular expressions so you need to escape it) ensure that you match only files with extension .dbf (in case you have e.g. .adbf...
How do I update if exists, insert if not (AKA “upsert” or “m>me m>rge”) in MySQL?
...ON DUPLICATE KEY UPDATE. For example:
INSERT INTO `usage`
(`thing_id`, `tim>me m>s_used`, `first_tim>me m>_used`)
VALUES
(4815162342, 1, NOW())
ON DUPLICATE KEY UPDATE
`tim>me m>s_used` = `tim>me m>s_used` + 1
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How can I calculate the tim>me m> between 2 Dates in typescript
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Use the getTim>me m> m>me m>thod to get the tim>me m> in total milliseconds since 1970-01-01, and subtract those:
var tim>me m> = new Date().getTim>me m>() - new Date("2013-02-20T12:01:04.753Z").getTim>me m>();
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C++ const map elem>me m>nt access
I tried to use the operator[] access the elem>me m>nt in a const C++ map, but this m>me m>thod failed. I also tried to use "at()" to do the sam>me m> thing. It worked this tim>me m>. However, I could not find any reference about using "at()" to access elem>me m>nt in a const C++ map. Is "at()" a newly added function in C++ ...
Viewing full version tree in git
...t want a few branches, you can do:
gitk master origin/master origin/experim>me m>nt
... or more exotic things like:
gitk --simplify-by-decoration --all
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Creating a favicon [closed]
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@EduardoRusso this is simply awesom>me m> - thanks!
– davnicwil
May 17 '15 at 2:17
4
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Why should I implem>me m>nt ICloneable in c#?
Can you explain to m>me m> why I should inherit from ICloneable and implem>me m>nt the Clone() m>me m>thod?
4 Answers
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bower command not found
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We don't recomm>me m>nd using Bower for new projects. Please consider Yarn and Webpack or Parcel.
– Daniel
Aug 13 '18 at 14:55
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