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内存调试技巧：C 语言最大难点揭秘 - C/C++ - 清泛网 - 专注C/C++及内核技术
内存调试技巧：C 语言最大难点揭秘au-memorytechniques本文将带您了解一些良好的和内存相关的编码实践，以将内存错误保持在控制范围内。内存错误是 C 和 C++ 编程的祸根：它们很普遍，认识其严重性已有二十多年，但始终没有彻...
What is the difference between Θ(n) and O(n)?
...for some values of c1 and c2, i.e. the growth rate of f is asymptotically equal to g: g can be a lower bound and and an upper bound of f. This directly implies f can be a lower bound and an upper bound of g as well. Consequently,
f(x) = Θ(g(x)) iff g(x) = Θ(f(x))
Similarly, to show f(n) = Θ...
How to make Entity Framework Data Context Readonly
...ring")
{
}
// Don't expose Add(), Remove(), etc.
public DbQuery<Customer> Customers
{
get
{
// Don't track changes to query results
return Set<Customer>().AsNoTracking();
}
}
public override int SaveChanges()
...
Why is the Windows cmd.exe limited to 80 characters wide?
...virtually universally supported.)
DEBUG
A100
MOV AX,1112
INT 10
INT 20
G
Q
132x60 Line Resolution (No framebuffer, requires SVGA. Won't work on ATI gfx cards, usually works on nVidia gfx cards, afaict always works on Intel integrated gfx cards.)
DEBUG
A100
MOV AX,4F02
MOV BX,010C
INT 10
INT 20
G...
The shortest possible output from git log containing author and date
...2008 +0000 updated to most recent will_pagina
Inspired by stackoverflow question: "git log output like svn ls -v", i found out that I could add the exact params I needed.
To shorten the date (not showing the time) use --date=short
In case you were curious what the different options were:
%h = a...
Properly escape a double quote in CSV
...
Use 2 quotes:
"Samsung U600 24"""
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Linq order by boolean
I've got a linq query that I want to order by f.bar, which is a string, but I also want to order it by f.foo, which is a boolean field, first. Like the query below.
...
Get image data url in JavaScript?
...
Yes, you would download the image with XMLHttpRequest. Hopefully, it would use the cached version of the image, but that would depend on the server and browser configuration, and you would have the request overhead to determine if the file has changed. That's why I didn't ...
How to prune local tracking branches that do not exist on remote anymore
...ches that are not in the list of remotes.
This line should do the trick (requires bash or zsh, won't work with standard Bourne shell):
git branch -r | awk '{print $1}' | egrep -v -f /dev/fd/0 <(git branch -vv | grep origin) | awk '{print $1}' | xargs git branch -d
This string gets the list of re...
In Vim, how do I apply a macro to a set of lines?
...o repeat that macro on all of the remaining lines in the file. Is there a quick way to do this?
4 Answers
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