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How can I determine if a String is non-null and not only whitespace in Groovy?
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Mercurial .hgignore for Visual Studio 2010 projects
... @David: That's for Windows thumbnail cache files "thumbs.db" read more about it here: en.wikipedia.org/wiki/Windows_thumbnail_cache
– Shady M. Najib
Apr 13 '11 at 19:34
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Difference between 2 dates in SQLite
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This answer is far more feature filled than the accepted answer, IMHO.
– Marcus Parsons
Oct 18 '18 at 14:37
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add column to mysql table if it does not exist
...atabase_1_0_to_2_0() $$
DELIMITER ;
On a first glance it probably looks more complicated than it should, but we have to deal with following problems here:
IF statements only work in stored procedures, not when run directly,
e.g. in mysql client
more elegant and concise SHOW COLUMNS does not wor...
How to make a Java class that implements one interface with two generic types?
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Use JNI instead of JNA to call native code?
... without copying.
These are the problems I've encountered. Maybe there's more. But in general performance is not that different between jna and jni, so wherever you can use JNA, use it.
EDIT
This answer seems to be quite popular. So here are some additions:
If you need to map C++ or COM, there...
Using Git, show all commits that are in one branch, but not the other(s)
... branches which contain the commits from "branch-to-delete".
If it reports more than just "branch-to-delete", the branch has been merged.
Your alternatives are really just rev-list syntax things. e.g. git log one-branch..another-branch shows everything that one-branch needs to have everything ano...
Update value of a nested dictionary of varying depth
...ther mapping-derived object (lists of pairs of things). Makes the function more general and less likely to quietly ignore mapping-derived objects and leave them un-updated (insidious error that the OP might not ever see/catch). You almost always want to use Mapping to find dict types and basestring ...
Typedef function pointer?
...to be really tricky with pointers to functions arrays, and some other even more indirect flavors.
To answer your three questions
Why is typedef used?
To ease the reading of the code - especially for pointers to functions, or structure names.
The syntax looks odd (in the pointer to function decla...
What is a C++ delegate?
...t(double)> f = [can be set to about anything in this answer]
// Usually more useful as a parameter to another functions
Option 6: binding (using std::bind)
Allows setting some parameters in advance, convenient to call a member function for instance.
struct MyClass
{
int DoStuff(double d...