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How do I force Postgres to use a particular index?
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With over 30 years of experience on platforms such as Oracle, Teradata and MSSQL, I find the optimizer of PostgreSQL 10 not especially smart. Even with up-to-date statistics it generates less efficient execution plans than forced in a special direction. Providi...
What are the performance characteristics of sqlite with very large database files? [closed]
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We are using DBS of 50 GB+ on our platform. no complains works great.
Make sure you are doing everything right! Are you using predefined statements ?
*SQLITE 3.7.3
Transactions
Pre made statements
Apply these settings (right after you create the DB)
PRAG...
Difference between a Structure and a Union
.... This program overwrote the 0xEF with 0x22 on my Mac, but there are other platforms where it would overwrite the 0xDE instead because the order of the bytes that make up the int were reversed. Therefore, when writing a program, you should never rely on the behavior of overwriting specific data in a...
'size_t' vs 'container::size_type'
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size_t is defined as the type used for the size of an object and is platform dependent.
container::size_type is the type that is used for the number of elements in the container and is container dependent.
All std containers use size_t as the size_type, but each independent library vendor c...
What are major differences between C# and Java?
...antees that the result of floating point operations remain the same across platforms.
• Java supports checked exceptions for better enforcement of error trapping and handling.
share
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Timeout on a function call
... because signal.alarm and the related SIGALRM are not available on Windows platforms.
– Double AA
Aug 19 '11 at 16:20
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Is there any way to kill a Thread?
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There is no official API to do that, no.
You need to use platform API to kill the thread, e.g. pthread_kill, or TerminateThread. You can access such API e.g. through pythonwin, or through ctypes.
Notice that this is inherently unsafe. It will likely lead to uncollectable garbage (...
Going from a framework to no-framework [closed]
...e been programming professionally for almost 20 years, across a variety of platforms, and it still took me a while to become comfortable with CI. But now that I am, I wouldn't go back to pure PHP (for my own projects) unless I had a site of sufficient scale that it exposed quantifiable performance ...
Hashing a dictionary?
... consistent across different machines. Implementations of python on cloud platforms like Heroku and GAE will return different values for hash() on different instances making it useless for anything that must be shared between two or more "machines" (dynos in the case of heroku)
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How to force use of overflow menu on devices with menu button
...nal logic to decide whether to show the overflow menu. If you use ABS, all platforms < 4.0 are handled by ABS and are thus subjected to its logic. The hack will still work for all devices with Android 4.0 or greater (you can safely ignore Android 3.x, since there aren't really any tablets out the...