packing Questions
2
I have a piece of Python code:
def func1():
a=set()
b = ','.join(map(str, list(a)))
return b, []
def func2():
d = 1
e = 2
return func1() + (d, e,)
def main():
a,b,c,d = func2()
if __name...
3
I'm writing a shader (HLSL), and I need to pack a color value into the R32 format. I've found various pieces of code for packing a float into the R8G8B8A8 format, but none of them seem to work in r...
11
Solved
2
Solved
I am trying to model random closed packing spheres of uniform size in a square using python. And the spheres should not overlap but I do not know how to do this
I have so far:
Code:
import rand...
Basie asked 11/10, 2016 at 0:57
2
I am trying to implement a 3D packing algorithm using the extreme point-based approach. The paper which introduced this approach can be seen here: Extreme Point-Based Heuristics for Three-Dimension...
Hux asked 2/4, 2017 at 16:11
2
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I'm stumbling through Gtk+ tutorials and the reference, trying to understand how to get a decent layout done. The docs say you should use GtkGrid instead of the deprecated Box/HBox/VBox, but I’m ha...
Timmons asked 29/8, 2013 at 14:37
3
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I searching algorithm to solve problem like this:
I have few windows, each window can be moved and re sized but with specified ratio between width and height, eg. 2:1 (height:width).
Each window ...
0
we are trying to create a visualisation with D3 which represents a stock portfolios assets with relative sized weightings with 3 levels deep nested data. We have used D3 Pack and a zoom function su...
Ringo asked 21/6, 2018 at 5:3
1
Let's say I have a package foo, and foo packages up binary shared objects that I use in multiple Python scripts.
Foo v1 (shared objects)
Bar v1 (requires Foo v1)
Baz v1 (requires Foo v1)
Now...
Vehicle asked 18/1, 2018 at 23:39
7
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Low level bit manipulation has never been my strong point. I will appreciate some help in understanding the following use case of bitwise operators.Consider...
int age, gender, height, packed_info...
Charybdis asked 2/7, 2011 at 12:24
1
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Are there any guarantees regarding packing of structs in C?
Just as an example, provided that sizeof(double) == 8, is it guaranteed that sizeof(struct { double x, y; }) == 16?
I am aware that the...
1
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I know structure packing is a common thing in C++ programming (at least on low memory systems). But what about classes.
I know it works because I tried it
#include <iostream>
#pragma pack(p...
Unquestioned asked 31/5, 2017 at 14:8
5
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I'm writing some software where each bit must be exact(it's for the CPU) so __packed is very important.
typedef union{
uint32_t raw;
struct{
unsigned int present:1;
unsigned int rw:1;
unsigned...
1
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How can I define #pragma pack(2) as a structure attribute?
I've read here that __attribute__((packed,aligned(4))) is roughly equivalent to #pragma pack(4).
However, if I try to use this (at least...
7
Solved
Ive got a bunch of rectangular objects which I need to pack into the smallest space possible (the dimensions of this space should be powers of two).
I'm aware of various packing algorithms that wi...
1
Is there any way to see how C structs are packed during build time? I've read through several similar posts about how structs may be packed:
How structs are saved in memory C
Why isn't sizeof...
5
I was trying to pack circles of different sizes into a rectangular container, not packing in circular container that d3.js bundled with, under d3.layout.pack.
here's the layout I want to achieve:
...
Demetrademetre asked 12/11, 2012 at 7:13
2
In python, one can declare a tuple explicitly with parenthesis as such:
>>> x = (0.25, 0.25, 0.25, 0.25)
>>> x
(0.25, 0.25, 0.25, 0.25)
>>> type(x)
<type 'tuple'>
...
Dialect asked 15/1, 2016 at 10:37
1
Solved
Can you help me understand what is going on here with GTest and struct packing?
The problem seems to be related to how a struct is packed when used as a value in a value-parameterised test in GTes...
Underlinen asked 17/11, 2015 at 0:19
1
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Hi all I understand that if rtree is created with range values in boost it would use packing algorithm. I need an example of rtree using packing algorithm. Here is my code that uses quadratic algor...
1
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I have two questions related to using list in R and I am trying to see how I can improve my naive solution. I have seen questions on similar topic here but the approach described there is not helpi...
4
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How can I make class, that can be cast to DateTime. But I need to cast my class, when it packed. For example:
object date1 = new MyDateTime();
DateTime date2 = (DateTime)date1;
I need directly t...
1
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Note: I don't think this is a duplicate of this question, which is talking about a non-background pack which hangs git with a subtly different error message.
In one of my git repositories, each ...
Kiethkiev asked 20/2, 2015 at 16:42
5
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I really like the way the SysInternals utilities (e.g. Process Explorer) handle 64bit compatibility. It looks like the 32bit executable has the 64bit version embedded in it, and extracts it i...
9
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During a code review I've come across some code that defines a simple structure as follows:
class foo {
unsigned char a;
unsigned char b;
unsigned char c;
}
Elsewhere, an array of these objec...
Priory asked 4/11, 2009 at 20:24
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