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How to sum a variable by group
... soon for example, since some data.table users have 250GB of RAM and GNU R now supports length > 2^31.
– Matt Dowle
Sep 9 '13 at 10:05
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Specifying Maven's local repository location as a CLI parameter
... executed. This will make your default local repo stay where it should be.
Now you can use mvn -Dm2.localRepository=... <phases/goals>. Because your command line system property gets added to the command line after the one in the mvn script, it will take precedence. (At least I'm pretty sure i...
How can I combine flexbox and vertical scroll in a full-height app?
...ren't meant to flex, they should both have flex: none; set on them. Right now you have a similar behavior due to some overlapping effects, but you shouldn't rely on that unless you want to accidentally confuse yourself later. (Default is flex:0 1 auto, so they start at their auto height and can shr...
Renaming table in rails
... table (or SQLite or PostgreSQL, depending on what database you're using). Now, as it happens, ActiveRecord::ConnectionAdapters::MysqlAdapter is already accessible through Model.connection, so you should be completely able to do Model.connection.rename_table, using any model in your application.
[/E...
“You are on a branch yet to be born” when adding git submodule
...dule link, and the submodule repo itself must have a commit to check out.
Now, the submodule repo itself must be ok if you can create a regular clone elsewhere. However, it looks like submodule add complains if the repo is empty while clone does not. This guy suggests this is fixable by just runnin...
How can I use “sizeof” in a preprocessor macro?
...rns out - as the article even says - I am building Linux kernel code right now - and there is a define already in the kernel - BUILD_BUG_ON - where the kernel uses it for things like: BUILD_BUG_ON(sizeof(char) != 8)
– Brad
Nov 2 '10 at 16:30
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Run a single Maven plugin execution?
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This answer is now outdated with current versions of Maven. See the answer provided by @Joe
– Noremac
Sep 2 '15 at 15:51
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Update one MySQL table with values from another
...), so I took your and noodl's advice about the indexes and the whole query now finishes in under a second. I can't believe the difference!? Thanks so much for your help; I've learnt a lot!
– Superangel
Apr 20 '11 at 13:47
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Learning Regular Expressions [closed]
... to what you might think of as cautious, add an extra ? to the quantifier. Now you understand how \((.+?)\), the example from your question works. It matches the sequence of a literal left-parenthesis, followed by one or more characters, and terminated by a right-parenthesis.
If your input is '(123...
Is it possible to set code behind a resource dictionary in WPF for event handling?
...elt it was needed to complete the answer ; a common mistake. I did it just now :) Revert if you dont like it. Thanks for the answer.
– Gishu
May 19 '10 at 10:34
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