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What is the effect of extern “C” in C++?
...then link to using the C name.
Since C++ has overloading of function names and C does not, the C++ compiler cannot just use the function name as a unique id to link to, so it mangles the name by adding information about the arguments. A C compiler does not need to mangle the name since you can not ...
How to get first character of string?
I have a string, and I need to get its first character.
16 Answers
16
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“ImportError: No module named” when trying to run Python script
...t. I get a ImportError: No module named ..., however, if I launch ipython and import the same module in the same way through the interpreter, the module is accepted.
...
Sending POST data in Android
I'm experienced with PHP, JavaScript and a lot of other scripting languages, but I don't have a lot of experience with Java or Android.
...
Compiling problems: cannot find crt1.o
...
The problem is you likely only have the gcc for your current architecture and that's 64bit. You need the 32bit support files. For that, you need to install them
sudo apt install gcc-multilib
share
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...
How to create a HashMap with two keys (Key-Pair, Value)?
...= 31 * result + y;
return result;
}
}
Implementing equals() and hashCode() is crucial here. Then you simply use:
Map<Key, V> map = //...
and:
map.get(new Key(2, 5));
Table from Guava
Table<Integer, Integer, V> table = HashBasedTable.create();
//...
table.get(2, 5);...
How to trick an application into thinking its stdout is a terminal, not a pipe
...
Aha!
The script command does what we want...
script --return --quiet -c "[executable string]" /dev/null
Does the trick!
Usage:
script [options] [file]
Make a typescript of a terminal session.
Options:
-a, --append append...
How do I add an icon to a mingw-gcc compiled executable?
...it as my.rc.
id ICON "path/to/my.ico"
The id mentioned in the above command can be pretty much anything. It doesn't matter unless you want to refer to it in your code. Then run windres as follows:
windres my.rc -O coff -o my.res
Then while building the executable, along with other object files...
Disable assertions in Python
... process that uses or inherits the environment.
E.g., in Windows, setting and then clearing the environment variable:
C:\>python -c "assert False"
Traceback (most recent call last):
File "<string>", line 1, in <module>
AssertionError
C:\>SET PYTHONOPTIMIZE=TRUE
C:\>python -...
Sibling package imports
I've tried reading through questions about sibling imports and even the
package documentation , but I've yet to find an answer.
...