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Simple way to encode a string according to a password?
...less you read this and don't mind talking with lawyers:
What's wrong with XOR encryption?
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Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
...i_escape 0x10,0x6,0x2,0x75,0x78
.cfi_escape 0x10,0x3,0x2,0x75,0x74
xorl %edi, %edi
subl $24, %esp
call ___main
L4:
movl %edi, (%esp)
movl $__ZSt4cout, %ecx
call __ZNSolsEi
movl %eax, %esi
movl (%eax), %eax
subl $4, %esp
movl -...
What does multicore assembly language look like?
...it_len, %ecx
mov $init, %esi
mov 0x1000, %edi
rep movsb
.code16
init:
xor %ax, %ax
mov %ax, %ds
/* Do stuff. */
hlt
.equ init_len, . - init
Using a linker script is another possibility.
The delay loops are an annoying part to get working: there is no super simple way to do such sl...
Win32汇编--使用MASM - C/C++ - 清泛网 - 专注C/C++及内核技术
...开指令和操作数可以使格式对齐，便于阅读。如：
xor eax,eax
fistp dwNumber
xchg eax,ebx
上述代码的写法就不如下面的写法整齐：
xor eax,eax
fistp dwNumber
xchg eax,ebx
还有就是缩进格式...
How to run a program without an operating system?
....S
.code16
.text
.global mystart
mystart:
ljmp $0, $.setcs
.setcs:
xor %ax, %ax
mov %ax, %ds
mov %ax, %es
mov %ax, %ss
mov $__stack_top, %esp
cld
call main
linker.ld
ENTRY(mystart)
SECTIONS
{
. = 0x7c00;
.text : {
entry.o(.text)
*(.text)
*(.data)
...
Programmer Puzzle: Encoding a chess board state throughout a game
...not to, at least in part, resemble a starting position.
So what you do is XOR the 256 bit current board position with a 256 bit starting position and then encode that (using Huffman coding or, say, some method of run length encoding). Obviously this will be very efficient to start with (64 0s proba...
Relational table naming convention [closed]
... description or whatever.
That's right. Either user_product_description xor product_description will be correct, based on the above. It is not to differentiate it from other xxxx_descriptions, but it is to give the name a sense of where it belongs, the prefix being the parent table.
What abo...
构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...度得以支撑；同时在可靠性方面，Storm的ack组件利用异或xor算法在不失性能的同时，保证每一个消息得到完整处理的同时。
11) 实时推送
实时推送的应用场景非常多，比如系统的监控动态的实时曲线绘制，手机消息的推送，web...
How can I get a count of the total number of digits in a number?
...
Without converting to a string you could try:
Math.Ceiling(Math.Log10(n));
Correction following ysap's comment:
Math.Floor(Math.Log10(n) + 1);
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How to round up to the nearest 10 (or 100 or X)?
...
If you just want to round up to the nearest power of 10, then just define:
roundUp <- function(x) 10^ceiling(log10(x))
This actually also works when x is a vector:
> roundUp(c(0.0023, 3.99, 10, 1003))
[1] 1e-02 1e+01 1e+01 1e+04
..but if you want to round to a "nice...