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How to check if a table exists in a given schema
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pg_tables is actually a good idea for "How to check whether a table exists?" (Checking for tables only, not for other purposes, like explained above. Also, pg_tables is a view involving several tables (pg_class, pg_namespace, pg_tablespace), which is a b...
MyISAM versus InnoDB [closed]
...n simply be dropped instead of running deletes on it.
Of course I have no idea what your application is but hopefully this gives you some insight into some of the issues with MyISAM and InnoDB.
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How to set tbody height with overflow scroll
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Great idea! It does not mess the table layout like the other options do.
– André
Aug 3 '19 at 23:39
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Why use symbols as hash keys in Ruby?
...ce for all occurrences of :bar in a program. Before Ruby 2.2, it was a bad idea to constantly create new Symbols that were never reused, as they would remain in the global Symbol lookup table forever. Ruby 2.2 will garbage collect them, so no worries.
3) Actually, computing the hash for a Symbol di...
What is the difference in maven between dependency and plugin tags in pom xml?
... dependency) in any Maven version while since Maven 3 (probably a bad good idea as feature), specifying the plugin version is optional. Maven will use the last version available in the release repository where Maven finds it. (1/2)
– davidxxx
Jan 17 '19 at 18:3...
What is a “callback” in C and how are they implemented?
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I have no idea what this does, and it's unable to be compiled successfully. Can anyone explain it in detailed way or fill the rest of the code up in order for compile successfully?
– Andy Lin
Jun ...
What is the “owning side” in an ORM mapping?
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Why is the notion of a owning side necessary:
The idea of a owning side of a bidirectional relation comes from the fact that in relational databases there are no bidirectional relations like in the case of objects. In databases we only have unidirectional relations - foreign...
Running a Haskell program on the Android OS
...ely there (see squeakvm.org, the Cog branch for that), but one may get the idea. One also might look under http://gitorious.org/~golubovsky/cogvm/dmg-blessed/trees/master/platforms/android/vm which is the C frontend to the interpreter (including user events handling, some timekeeping, etc.)
Hope th...
100% width Twitter Bootstrap 3 template
...-fluid class, but that doesn't seem to be available any longer. I have no idea how to achieve that layout with bootstrap 3. I am using the Geometry PSD template from themeforest, the link here if you want to see the layout : http://themeforest.net/item/geometry-design-for-geolocation-social-networ...
App Inventor 2 扩展 · App Inventor 2 中文网
... how to define the blocks for the
Blocks editor.
It would also be a good idea to look at the resources at the MIT App Inventor Open Source Web page. You might also want to participate in the MIT App Inventor Open Source Development group which is a good place to find advice on implementing compon...