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How do I tar a directory of files and folders without including the directory itself?
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@Ivan if you replace . with * so the command will be cd my_directory/ && tar -zcvf ../my_dir.tgz * && cd .. then it will work as you expected.
– Anonymous
Mar 3 '15 at 2:47
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Making a UITableView scroll when text field is selected
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If you use UITableViewController instead of UIViewController, it will automatically do so.
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No == operator found while comparing structs in C++
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@Jonathan: Why would C++ know how you want to compare your structs for equality? And if you want the simple way, there's always memcmp so long your structs don't contain pointer.
– Xeo
Apr 21 '11 at 6:59
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Team Build Error: The Path … is already mapped to workspace
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Specifically, you can remove the offending workspace's WorkspaceInfo entry from C:\Users\ukcco3jbe\AppData\Local\Microsoft\Team Foundation\3.0\Cache\VersionControl.config. XPath: /VersionControlServer/Servers/ServerInfo/Workspac...
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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Random record from MongoDB
...m the mycoll collection.
db.mycoll.aggregate([{ $sample: { size: 1 } }])
If you want to select the random document(s) from a filtered subset of the collection, prepend a $match stage to the pipeline:
// Get one random document matching {a: 10} from the mycoll collection.
db.mycoll.aggregate([
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How to handle Objective-C protocols that contain properties?
...l, they have no variables or methods themselves - they only describe a specific set of attributes that is true about your class so that objects holding references to them can use them in specific ways.
That means in your class that conforms to your protocol, you have to do everything to make sure a...
Django: Set foreign key using integer?
...ea there. While it works, and the type field gets written to the database, if you access the type property afterwards it doesn't reflect the change. Said in code, this would fail assert(employe.type.id == 4).
– Rune Kaagaard
Jan 9 '17 at 20:29
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How to recover a dropped stash in Git?
...mal tools. When you’re done, just blow the branch away.
Finding the hash
If you have only just popped it and the terminal is still open, you will still have the hash value printed by git stash pop on screen (thanks, Dolda).
Otherwise, you can find it using this for Linux, Unix or Git Bash for Wind...
How to keep index when using pandas merge
... I do the merge, the resulting DataFrame has integer index. How can I specify that I want to keep the index from the left data frame?
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