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How to run a program without an operating system?
How do you run a program all by itself without an operating system running?
Can you create assembly programs that the computer can load and run at startup, e.g. boot the computer from a flash drive and it runs the program that is on the CPU?
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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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How do you debug PHP scripts? [closed]
...clipse environment that has debugging features like you mentioned. The ability to step into the code is a much better way to debug then the old method of var_dump and print at various points to see where your flow goes wrong. When all else fails though and all I have is SSH and vim I still var_dump(...
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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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 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'
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a list may ...
TypeScript typed array usage
I have a TypeScript class definition that starts like this;
3 Answers
3
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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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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...
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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