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Overloading Macro on Number of Arguments
...OO2)(__VA_ARGS__)
So if you have these macros:
FOO(World, !) # expands to FOO2(World, !)
FOO(foo,bar,baz) # expands to FOO3(foo,bar,baz)
If you want a fourth one:
#define GET_MACRO(_1,_2,_3,_4,NAME,...) NAME
#define FOO(...) GET_MACRO(__VA_ARGS__, FOO4, FOO3, FOO2)(__VA_ARGS__)
F...
JPA EntityManager: Why use persist() over merge()?
EntityManager.merge() can insert new objects and update existing ones.
15 Answers
15
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Why wasn't PyPy included in standard Python?
...true of all "pure GC" strategies.
PyPy does not yet fully support Python 3.x, although that is an active work item.
PyPy is a great project, but runtime speed on CPU-intensive tasks isn't everything, and in many applications it's the least of many concerns. For instance, Django can run on PyPy an...
Using wget to recursively fetch a directory with arbitrary files in it
...ursive, of course), otherwise it will follow the link in the directory index on my site to the parent directory. So the command would look like this:
wget --recursive --no-parent http://example.com/configs/.vim/
To avoid downloading the auto-generated index.html files, use the -R/--reject option:...
PHP Replace last occurrence of a String in a String?
...ctions. (But did they have to change the name?)
– alexis
Dec 5 '18 at 20:55
...
Check if passed argument is file or directory in Bash
I'm trying to write an extremely simple script in Ubuntu which would allow me to pass it either a filename or a directory, and be able to do something specific when it's a file, and something else when it's a directory. The problem I'm having is when the directory name, or probably files too, has s...
Convert hex string to int in Python
How do I convert a hex string to an int in Python?
12 Answers
12
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How do I sort an observable collection?
...g an observable and returning the same object sorted can be done using an extension method. For larger collections watch out for the number of collection changed notifications.
I have updated my code to improve performance (thanks to nawfal) and to handle duplicates which no other answers here do at...
How to display full (non-truncated) dataframe information in html when converting from pandas datafr
...
Set the display.max_colwidth option to -1:
pd.set_option('display.max_colwidth', -1)
set_option docs
For example, in iPython, we see that the information is truncated to 50 characters. Anything in excess is ellipsized:
If you set the display...
How can I implement prepend and append with regular JavaScript?
...ild)
Inserts the node newChild as a child of parentNode before the
existing child node refChild. (Returns newChild.)
If refChild is null, newChild is added at the end of the list of
children. Equivalently, and more readably, use
parentNode.appendChild(newChild).
...