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How to get a random number in Ruby
...6). A roll in craps could be simulated with 2 + rand(6) + rand(6).
Finally, if you just need a random float, just call rand with no arguments.
As Marc-André Lafortune mentions in his answer below (go upvote it), Ruby 1.9.2 has its own Random class (that Marc-André himself helped to debug,...
Replace all spaces in a string with '+' [duplicate]
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@JitendraPancholi that replaces all whitespace, not just the space character. The other regex answer here is fine.
– Dagg Nabbit
Jul 16 '14 at 10:23
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MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update
as the title says, I want to perform a find (one) for a document, by _id, and if doesn't exist, have it created, then whether it was found or was created, have it returned in the callback.
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Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.10:test
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Locate the dependencies you're missing with mvn dependency:tree, then install them manually, and build your project with the -o (offline) option.
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What's “P=NP?”, and why is it such a famous question? [closed]
The question of whether P=NP is perhaps the most famous in all of Computer Science. What does it mean? And why is it so interesting?
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How to pass an array within a query string?
...s[]" value="Mercedes">
NOTE: Using field[] for multiple values is really poorly documented. I don't see any mention of it in the section on multi-valued keys in Query string - Wikipedia, or in the W3C docs dealing with multi-select inputs.
UPDATE
As commenters have pointed out, this is ve...
Getting the last revision number in SVN?
Using PHP, Perl, or Python (preferably PHP), I need a way to query an SVN database and find out the last revision number sent to SVN. I don't need anything other than that. It needs to be non-intensive (so I do it every 5 minutes as a cron job; SVN's performance should not be affected).
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How can I append a string to an existing field in MySQL?
I want to update the code on all my record to what they currently are plus _standard any ideas?
2 Answers
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How to tell if a file is git tracked (by shell exit code)?
...er up your console with error messages, you can also run
git ls-files file_name
and then check the result. If git returns nothing, then the file is not tracked. If it's tracked, git will return the file path.
This comes in handy if you want to combine it in a script, for example PowerShell:
$gi...
How to exclude certain messages by TAG name using Android adb logcat?
Logcat allows filtering logs but it works like that: You define filters and logcat only displays messages which matches filters. But is there a way to display all logs EXCEPT some TAGs defined by filters?
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