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What command opens Ruby's REPL?
What command opens Ruby's REPL?
2 Answers
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Is there a way to tell git to only include certain files instead of ignoring certain files?
...gnore file with * and then list all of my included file patterns proceeded by an exclamation point.
– Daisy Sophia Hollman
Aug 14 '09 at 19:44
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How set the default repository
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Yeah, tonfa's right on both counts. You do it by editing a file and if you don't want to pop open an editor you could do it by shell redirect. There's no 'set' command.
– Ry4an Brase
Sep 27 '10 at 13:56
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How to ssh to vagrant without actually running “vagrant ssh”?
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By adding an entry to the ~/.ssh/config in the way @adamczi suggests you can then use the Visual Studio Code Remote - SSH extension to ssh into the Vagrant VM and edit files and do remote development. Simply CMD-SHIFT-P then ...
Recommended way to save uploaded files in a servlet application
...n the webapp's deploy folder will not work at all. Some servers do (either by default or by configuration) not expand the deployed WAR file into the local disk file system, but instead fully in the memory. You can't create new files in the memory without basically editing the deployed WAR file and r...
SQL: How to get the count of each distinct value in a column?
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SELECT
category,
COUNT(*) AS `num`
FROM
posts
GROUP BY
category
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How to change the button text of ?
... the same row) while clicking on an image! :/
– sohaiby
May 11 '15 at 12:09
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Learning to write a compiler [closed]
Preferred languages : C/C++, Java, and Ruby.
38 Answers
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How to debug PDO database queries?
Before moving to PDO, I created SQL queries in PHP by concatenating strings. If I got database syntax error, I could just echo the final SQL query string, try it myself on the database, and tweak it until I fixed the error, then put that back into the code.
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Django filter queryset __in for *every* item in list
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Summary:
One option is, as suggested by jpic and sgallen in the comments, to add .filter() for each category. Each additional filter adds more joins, which should not be a problem for small set of categories.
There is the aggregation approach. This query would ...