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Cannot add or update a child row: a foreign key constraint fails
... @SachinfromPune just add SET FOREIGN_KEY_CHECKS=0; at starting of mysql file and SET FOREIGN_KEY_CHECKS=1; at end of mysql file, reimport data
– inrsaurabh
Sep 15 '17 at 12:26
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What are the underlying data structures used for Redis?
...m-ish unique users") or with replacement ("give me 7 cards, but after each selection, put the card back so it can potentially be sampled again").
For all possible operations on sets, see the sets docs.
Sorted Sets
Redis sorted sets are sets with a user-defined ordering.
For simplicity, you can think...
mysql Foreign key constraint is incorrectly formed error
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mysql error texts doesn't help so much, in my case, the column had "not null" constraint, so the "on delete set null" was not allowed
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File tree view in Notepad++
...tepad++ toolbar Plugins > Plugin Manager > Show Plugin Manager.
Then select the Explorer plugin and click the Install button.
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Overriding id on create in ActiveRecord
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Perhaps what I experienced only expressed itself with mysql driver.
– jkndrkn
Feb 18 '13 at 19:30
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Automatically add all files in a folder to a target using CMake?
... Makefile manually, you might generate a SRCS variable using a function to select all .cpp and .h files. If a source file is later added, re-running make will include it.
However, CMake (with a command like file(GLOB ...)) will explicitly generate a file list and place it in the auto-generated Mak...
How to convert JSON to XML or XML to JSON?
...bject)d.Value);
if (xml.HasElements) attr.Add("_value", xml.Elements().Select(e => GetXmlData(e)));
else if (!xml.IsEmpty) attr.Add("_value", xml.Value);
return new Dictionary<string, object> { { xml.Name.LocalName, attr } };
}
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Change application's starting activity
...default or the correct one under "Launch:". Not sure why the default was deselected for me, but changing it back worked.
– zeh
Feb 1 '12 at 1:32
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Using Emacs to recursively find and replace in text files not already open
...files, type D to close them all.
Step-by-Step Guide for Emacs Beginners
Select Target Files
Start emacs by typing “emacs” in the command line interface prompt. (Or, double click the Emacs icon if you are in a Graphics User Interface environment)
Selecting Files in a Directory
First you nee...
How to find a deleted file in the project commit history?
...c 'full/path/to/MyFile.js' did not match any file(s) known to git.`
Just select the preceding (append a caret) commit:
> git checkout bd8374c^ -- full/path/to/MyFile.js
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