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使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...了四种不同数据类型（字节、整数、十进制浮点数和文本字符串）的块，这些块是为了从 BLE 设备读取数据而创建的。 这些块包括读取单个值和在值更改时读取通知。 对于每个实例，都会返回特定的数据值。
写入值：创...
How can you encode a string to Base64 in JavaScript?
...s utf8, possible encoding types are ascii, utf8, ucs2, base64, binary, and hex
var b = new Buffer('JavaScript');
// If we don't use toString(), JavaScript assumes we want to convert the object to utf8.
// We can make it convert to other formats by passing the encoding type to toString().
var s = b.t...
What new capabilities do user-defined literals add to C++?
...the introduction of new literal syntax based on existing literals ( int , hex , string , float ) so that any type will be able to have a literal presentation.
...
Learning assembly [closed]
... older versions of
DOS). Debug can act as an assembler, disassembler, or hex dump
program allowing users to interactively examine memory contents (in assembly language, hexadecimal or ASCII), make changes, and selectively execute COM, EXE and other file types.
It also has several subcommands w...
移动前端开发之viewport的深入理解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
width
设置layout viewport 的宽度，为一个正整数，或字符串"width-device"
initial-scale
设置页面的初始缩放值，为一个数字，可以带小数
minimum-scale
允许用户的最小缩放值，为一个数字，可以带小数
maximum-sca...
RSA Public Key format
...dom RSA PUBLIC KEY i found (in the question), and decoding the base64 into hex:
30 82 01 0a 02 82 01 01 00 fb 11 99 ff 07 33 f6 e8 05 a4 fd 3b 36 ca 68
e9 4d 7b 97 46 21 16 21 69 c7 15 38 a5 39 37 2e 27 f3 f5 1d f3 b0 8b 2e
11 1c 2d 6b bf 9f 58 87 f1 3a 8d b4 f1 eb 6d fe 38 6c 92 25 68 75 21 2d
...
What is the difference between native code, machine code and assembly code?
... that the CPU executes. Machine code, like here, is commonly displayed in hex. Illustrative perhaps is that 0x8B selects the MOV instruction, the additional bytes are there to tell the CPU exactly what needs to be moved. Also note the two flavors of the CALL instruction, 0xE8 is the direct call, ...
How do I find where an exception was thrown in C++?
...xt);
unw_init_local(&cursor, &context);
_out << std::hex << std::uppercase;
while (0 < unw_step(&cursor)) {
unw_word_t ip = 0;
unw_get_reg(&cursor, UNW_REG_IP, &ip);
if (ip == 0) {
break;
}
unw_word_t ...
How does this giant regex work?
...urther.
This is what the backdoor looks like when it is accessed:
the hex part of the code:
\x65\x76\x61\x6C\x28\x67\x7A\x69\x6E\x66\x6C\x61\x74\x65\x28\x62\x61\x73\x65\x36\x34\x5F\x64\x65\x63\x6F\x64\x65\x28
is acutally:
eval(gzinflate(base64_decode(
This is the code will print out the sou...
“hello, world” 起源及其他 - 创意 - 清泛网 - 专注C/C++及内核技术
...对应每个整数（0，1，2…），函数返回“Hello wrold!”相应字符对应的ascii码值。拟合函数的表达式可以点原链接查看。图案出来很帅，已经应求印制成T恤。
3D Hello world: hello world in XL (Youtubu视频)
428种编程语言、63种人类语言下...