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How to sum all the values in a dictionary?

... I don't know if you love python, if you love python 3, or if really are referring to a python 2 – Lucas Vazquez Sep 23 '19 at 20:19 1 ...
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Pushing an existing Git repository to SVN

I've been doing all my work in Git and pushing to GitHub. I've been very happy with both the software and the site, and I have no wish to change my working practices at this point. ...
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What are all the common ways to read a file in Ruby?

What are all the common ways to read a file in Ruby? 10 Answers 10 ...
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'git status' shows changed files, but 'git diff' doesn't

I've had a look at all similar questions. However, I've double checked and something strange is definitely happening. 13 An...
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Deleting all files in a directory with Python

I want to delete all files with the extension .bak in a directory. How can I do that in Python? 7 Answers ...
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How to configure postgresql for the first time?

I have just installed postgresql and I specified password x during installation. When I try to do createdb and specify any password I get the message: ...
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How does PHP 'foreach' actually work?

...r the simplest case is Traversable objects, as for these foreach is essentially only syntax sugar for code along these lines: foreach ($it as $k => $v) { /* ... */ } /* translates to: */ if ($it instanceof IteratorAggregate) { $it = $it->getIterator(); } for ($it->rewind(); $it->v...
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Laravel Check If Related Model Exists

...hp 7.2+ you can't use count on the relation object, so there's no one-fits-all method for all relations. Use query method instead as @tremby provided below: $model->relation()->exists() generic solution working on all the relation types (pre php 7.2): if (count($model->relation)) { ...
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Enable remote MySQL connection: ERROR 1045 (28000): Access denied for user

... You have to put this as root: GRANT ALL PRIVILEGES ON *.* TO 'USERNAME'@'IP' IDENTIFIED BY 'PASSWORD' with grant option; ; where IP is the IP you want to allow access, USERNAME is the user you use to connect, and PASSWORD is the relevant password. If you wa...
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How can I list all tags in my Git repository by the date they were created?

I need some way to list all tags in my system by the date they were created but am not sure if I can get that data via git-log. Ideas? ...