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How do you get assembler output from C/C++ source in gcc?
....c
This will run the preprocessor (cpp) over helloworld.c, perform the initial compilation and then stop before the assembler is run.
By default this will output a file helloworld.s. The output file can be still be set by using the -o option.
gcc -S -o my_asm_output.s helloworld.c
Of course th...
How to use the PI constant in C++
...nometric functions in some C++ program. I get the trigonometric functions with include <math.h> . However, there doesn't seem to be a definition for PI in this header file.
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Managing constructors with many parameters in Java
...e of our projects, there's an class hierarchy that adds more parameters as it goes down the chain. At the bottom, some of the classes can have up to 30 parameters, 28 of which are just being passed into the super constructor.
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python: Change the scripts working directory to the script's own directory
... located, even if you don't know what directory that will be when you're writing your script. To do this, you can use the os.path functions:
import os
abspath = os.path.abspath(__file__)
dname = os.path.dirname(abspath)
os.chdir(dname)
This takes the filename of your script, converts it to an a...
How do I create a variable number of variables?
...ou can use variable key names to achieve the effect of variable variables without the security risk.
>>> x = "spam"
>>> z = {x: "eggs"}
>>> z["spam"]
'eggs'
For cases where you're thinking of doing something like
var1 = 'foo'
var2 = 'bar'
var3 = 'baz'
...
a list may ...
How does an underscore in front of a variable in a cocoa objective-c class work?
...score _ in front of the variable. Does anyone know what this means? Or how it works?
9 Answers
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Locking a file in Python
I need to lock a file for writing in Python. It will be accessed from multiple Python processes at once. I have found some solutions online, but most fail for my purposes as they are often only Unix based or Windows based.
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TypeScript typed array usage
I have a TypeScript class definition that starts like this;
3 Answers
3
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Best way to make Django's login_required the default
I'm working on a large Django app, the vast majority of which requires a login to access. This means that all throughout our app we've sprinkled:
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Is there a typical state machine implementation pattern?
We need to implement a simple state machine in C .
Is a standard switch statement the best way to go?
We have a current state (state) and a trigger for the transition.
...