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Find and restore a deleted file in a Git repository
Say I'm in a Git repository. I delete a file and commit that change. I continue working and make some more commits. Then, I find I need to restore that file.
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Java optional parameters
How do I use optional parameters in Java? What specification supports optional parameters?
17 Answers
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Function overloading by return type?
Why don't more mainstream statically typed languages support function/method overloading by return type? I can't think of any that do. It seems no less useful or reasonable than supporting overload by parameter type. How come it's so much less popular?
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What is Linux’s native GUI API?
... hardware abstraction layer where software is written to use a generalized set of commands, allowing for device independence and reuse of programs on any computer that implements X." my question is: why does X11 provide hardware interaction (HAL), should the Linux Kernel provide that and X11 opera...
What is the iBeacon Bluetooth Profile
I'd like to create my own iBeacon with some Bluetooth Low Energy dev kits. Apple has yet to release a specification for iBeacons, however, a few hardware developers have reverse Engineered the iBeacon from the AirLocate Sample code and started selling iBeacon dev kits.
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Best XML Parser for PHP [duplicate]
...eneral, it felt like I was using workarounds for things that should be basic functionality.
6 Answers
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Installing older version of R package
I am trying to use Rpy2 and ggplot2 but I get an error. After some searching for the error online, I found that the error occurs because there are changes in the ggplot2 package that are not yet reflected in Rpy2 (for example, see this post (Edit: Link is now dead)).
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Pick a random element from an array
Suppose I have an array and I want to pick one element at random.
16 Answers
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Import SQL dump into PostgreSQL database
We are switching hosts and the old one provided a SQL dump of the PostgreSQL database of our site.
15 Answers
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SQL Server query to find all permissions/access for all users in a database
...to adjust it some to account for schemas better. When perm.class_desc was set to SCHEMA it was mistakenly saying it had the schema granted access to some system table. I ended up adding a LEFT JOIN to sys.schemas ON perm.major_id = schem.schema_id and changing two select statements: [ObjectT...