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How do I analyze a program's core dump file with GDB when it has command-line parameters?
... crash scenario
Program terminated with signal 11, Segmentation fault.
#0 __strlen_ia32 () at ../sysdeps/i386/i686/multiarch/../../i586/strlen.S:99
99 ../sysdeps/i386/i686/multiarch/../../i586/strlen.S: No such file or directory.
in ../sysdeps/i386/i686/multiarch/../../i586/strlen.S
(gdb)
...
Finding all possible combinations of numbers to reach a given sum
...t those that reach the target. Here is the algorithm in Python:
def subset_sum(numbers, target, partial=[]):
s = sum(partial)
# check if the partial sum is equals to target
if s == target:
print "sum(%s)=%s" % (partial, target)
if s >= target:
return # if we re...
How to make a valid Windows filename from an arbitrary string?
...em.IO.Path.GetInvalidFileNameChars())
{
fileName = fileName.Replace(c, '_');
}
Edit:
Since GetInvalidFileNameChars() will return 10 or 15 chars, it's better to use a StringBuilder instead of a simple string; the original version will take longer and consume more memory.
...
如何获取IE (控件)的所有链接（包括Frameset, iframe） - C/C++ - 清泛网 -...
...接（包括Frameset, iframe）IE 顶层 body 节点通过IHTMLElement->get_all 方法无法获取iframe 里面的节点列表：CComPtr<IHTMLElement> body;...CComPtr<IDispatc...IE 顶层 body 节点通过IHTMLElement->get_all 方法无法获取iframe 里面的节点列表：
CComPtr<IHTMLElement...
What __init__ and self do on Python?
...
In this code:
class A(object):
def __init__(self):
self.x = 'Hello'
def method_a(self, foo):
print self.x + ' ' + foo
... the self variable represents the instance of the object itself. Most object-oriented languages pass this as a hidd...
Render HTML to PDF in Django site
...need to install the following modules: xhtml2pdf, html5lib, pypdf with easy_install.
Here is an usage example:
First define this function:
import cStringIO as StringIO
from xhtml2pdf import pisa
from django.template.loader import get_template
from django.template import Context
from django.http i...
How to join components of a path when you are constructing a URL in Python
...e os.path at run time based on the current OS.
# os.py
import sys, errno
_names = sys.builtin_module_names
if 'posix' in _names:
# ...
from posix import *
# ...
import posixpath as path
# ...
elif 'nt' in _names:
# ...
from nt import *
# ...
import ntpath as p...
How to create a video from images with FFmpeg?
...utput framerate
ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4
Alternatively the format video filter can be added to the filter chain to replace -pix_fmt yuv420p like "fps=25,format=yuv420p". The advantage of this method is that you can control which filter goes...
How can I strip all punctuation from a string in JavaScript using regex?
...citly remove exactly what you want like
replace(/[.,\/#!$%\^&\*;:{}=\-_`~()]/g,"")
Doing the above still doesn't return the string as you have specified it. If you want to remove any extra spaces that were left over from removing crazy punctuation, then you are going to want to do something l...
What do commas and spaces in multiple classes mean in CSS?
...
.container_12 .grid_6,
.container_16 .grid_8 {
width: 460px;
}
That says "make all .grid_6's within .container_12's and all .grid_8's within .container_16's 460 pixels wide." So both of the following will render the same:
<di...