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Troubleshooting “Illegal mix of collations” error in mysql
...The clause COLLATE allows you to specify the collation used in the query.
For example, the following WHERE clause will always give the error you posted:
WHERE 'A' COLLATE latin1_general_ci = 'A' COLLATE latin1_general_cs
Your solution is to specify a shared collation for the two columns within t...
What is the difference between the Data Mapper, Table Data Gateway (Gateway), Data Access Object (DA
...of them seem like they are the same thing - encapsulate the database logic for a specific entity so the calling code has no knowledge of the underlying persistence layer. From my brief research all of them typically implement your standard CRUD methods and abstract away the database-specific detail...
How can I extract embedded fonts from a PDF as valid font files?
...x systems consists of the following steps:
Convert the PDF to PostScript, for example by using XPDF's pdftops (on Windows: pdftops.exe helper program.
Now fonts will be embedded in .pfa (PostScript) format + you can extract them using a text editor.
You may need to convert the .pfa (ASCII) to a .pf...
PHP Function Comments
...stion: I've seen that some PHP functions are commented at the top, using a format that is unknown to me:
4 Answers
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Lock, mutex, semaphore… what's the difference?
... same as a mutex but allows x number of threads to enter, this can be used for example to limit the number of cpu, io or ram intensive tasks running at the same time.
For a more detailed post about the differences between mutex and semaphore read here.
You also have read/write locks that allows ei...
How to make an app's background image repeat
...Try with this too: android:gravity="clip_horizontal" --- it avoid image deformation
– Felipe
Sep 30 '11 at 21:37
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When should I use OWIN Katana?
...mplify, my question is: What do I lose if I skip learning OWIN and use IIS for my websites?
5 Answers
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Set Locale programmatically
...r I'd like to give the user the option to change locale in my application, for instance an Italian person might prefer Spanish over English.
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How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
...nts apply to all PrimeFaces versions:
The enctype attribute of the <h:form> needs to be set to multipart/form-data. When this is absent, the ajax upload may just work, but the general browser behavior is unspecified and dependent on form composition and webbrowser make/version. Just always s...
CMake link to external library
...ibrary( mylib SHARED IMPORTED )
# You can define two import-locations: one for debug and one for release.
set_target_properties( mylib PROPERTIES IMPORTED_LOCATION ${CMAKE_BINARY_DIR}/res/mylib.so )
And then link as if this library was built by your project:
TARGET_LINK_LIBRARIES(GLBall mylib)
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