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汇编语言（王爽著）附书签 - 文档下载 - 清泛网 - 专注C/C++及内核技术
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第17章 使用BIOS进行键盘输入和磁盘读写
综合研究
附注WinXP,Win7,Win8,Win1034.7M
Is there a way to iterate over a slice in reverse in Go?
... The effective go page an example, but this one is actually a bit nicer and declares fewer variables.
– Kevin Cantwell
Dec 5 '13 at 21:07
3
...
Evaluating a mathematical expression in a string
...
eval is evil
eval("__import__('os').remove('important file')") # arbitrary commands
eval("9**9**9**9**9**9**9**9", {'__builtins__': None}) # CPU, memory
Note: even if you use set __builtins__ to None it still might be possible to break out using introspection:
eval('(1).__class__.__bases_...
Search for one value in any column of any table inside a database
...several other features such as relationship diagrams and such…
I was a bit slow on large (40GB TFS Database) databases though…
Apart from this there is also SSMS Tools pack that offers a lot of other features that are quite useful even though these are not directly related to searching tex...
Checking if a folder exists using a .bat file [closed]
...his https://jeffpar.github.io/kbarchive/kb/065/Q65994/
C:
IF NOT EXIST C:\WIN\ GOTO NOWINDIR
CD \WIN
:NOWINDIR
trailing backslash ('\') seems to be enough to distinguish between directories and ordinary files.
share
...
Why is MATLAB so fast in matrix multiplication?
...4
>> gputimeit(@()gA*gA)
ans =
0.0022
Update using R2018b on a WIN64 machine with 16 physical cores and a Tesla V100:
>> timeit(@()A*A)
ans =
0.0229
>> gputimeit(@()gA*gA)
ans =
4.8019e-04
(NB: at some point (I forget when exactly) gpuArray switched from MAGMA to cu...
Convert PDF to image with high resolution
...
It appears that the following works:
convert \
-verbose \
-density 150 \
-trim \
test.pdf \
-quality 100 \
-flatten \
-sharpen 0x1.0 \
24-18.jpg
It results in the left image. Compa...
Smart way to truncate long strings
...re element. If you want to truncate part of a string, without wrapping the bit you want to truncate in a span or other html element, this won't work e.g.: Your picture ('some very long picture filename truncated...') has been uploaded.
– Chris
Apr 8 '13 at 18:3...
What are the file limits in Git (number and size)?
...ver really looks at less than the whole repo. Even if you
limit things a bit (ie check out just a portion, or have the history go
back just a bit), git ends up still always caring about the whole thing,
and carrying the knowledge around.
So git scales really badly if you force it to look ...
How do you get a timestamp in JavaScript?
...es:
By providing |, you tell the interpreter to do a binary OR operation. Bit operations require absolute numbers which turns the decimal result from Date.now() / 1000 into an integer.
During that conversion, decimals are removed, resulting in the same result as using Math.floor() but using less...