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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
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@blub: If you create a unique key on geb and topic it will work (ALTER TABLE table ADD UNIQUE geb_by_topic (geb, topic)).
– chaos
Aug 2 '09 at 13:43
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Not receiving Google OAuth refresh token
...Google. The Google API says that to get the access token, send the code and other parameters to token generating page, and the response will be a JSON Object like :
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“Register” an .exe so you can run it from any command line in Windows
...w can you make a .exe file accessible from any location in the Windows command window? Is there some registry entry that has to be entered?
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Is there a way to collapse all code blocks in Eclipse?
Eclipse has that "+/-" on the left to expand and collapse blocks of code.
15 Answers
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What does enumerable mean?
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An enumerable property is one that can be included in and visited during for..in loops (or a similar iteration of properties, like Object.keys()).
If a property isn't identified as enumerable, the loop will ignore that it's within the object.
var obj = { key: 'val' };
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How do I insert a linebreak where the cursor is without entering into insert mode in Vim?
...er (the space) with Enter. Then, fspace. to move forward to the next space and repeat the last command.
Depending on your autoindent settings, the above may or may not indent the return statement properly. If not, then use sEnterTabEsc instead to replace the space with a newline, indent the line, a...
Emacs on Mac OS X Leopard key bindings
I'm a Mac user and I've decided to learn Emacs. I've read that to reduce hand strain and improve accuracy the CTRL and CAPS LOCK keys should be swapped. How do I do this in Leopard?
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Python equivalent for PHP's implode?
Is there an equivalent for PHP's implode in Python? I've read in and split up a set of delimited words, and now I want to sort them out in random orders and print the words out with spaces in between.
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Can you require two form fields to match with HTML5?
...e to be done with javascript? For example, if you have two password fields and want to make sure that a user has entered the same data in each field, are there some attributes, or other coding that can be done, to achieve this?
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How to install a specific version of a ruby gem?
Using the command-line gem tool, how can I install a specific version of a gem?
6 Answers
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