大约有 39,600 项符合查询结果（耗时：0.0270秒） [XML]
NSIS做的安装程序，可接受命令行参数，实现静默安装，静默卸载 - 脚本技术 ...
...ser a bit more control over the installation process.3.2.1 Common Options/NCRC disables the CRC check, unless CRCCheck force was used in the script./S runs the installer or uninstaller silently. See section 4.12 for more information./D sets the default installation directory ($INSTDIR), overriding I...
Modbus硬件控制03——485串口助手控制继电器 - 创客硬件开发 - 清泛IT社区...
...
1.软件准备485串口调试助手，它集成485调试功能，自带CRC校验，非常易于使用。
2.硬件连接
通过USB转485接入PC
3.测试步骤
发送字符串，一共两条指令
第一条是闭合继电器
第二条是断开继电器
Get MIME type from filename extension
...ms-pki.stl"},
{".sv4cpio", "application/x-sv4cpio"},
{".sv4crc", "application/x-sv4crc"},
{".svc", "application/xml"},
{".swf", "application/x-shockwave-flash"},
{".t", "application/x-troff"},
{".tar", "application/x-tar"},
{".tcl", "applicatio...
Saving a Numpy array as an image
... chunk_head +
struct.pack("!I", 0xFFFFFFFF & zlib.crc32(chunk_head)))
return b''.join([
b'\x89PNG\r\n\x1a\n',
png_pack(b'IHDR', struct.pack("!2I5B", width, height, 8, 6, 0, 0, 0)),
png_pack(b'IDAT', zlib.compress(raw_data, 9)),
png_pack(b...
How to convert a string of bytes into an int?
... @eri I resurrected a timeit script i used to evaluate a couple of CRC methods. Four runs 1) struct 2) int.from_bytes 3) as #1 but cython compiled, 4) as #2 but cython compiled. 330ns for struct, 1.14us for int (cython gave maybe 20ns speedup in both...) looks like I am switching back :) thi...
Java associative-array
...t;String,String>>();
myMap1.put("URL", "Val0");
myMap1.put("CRC", "Vla1");
myMap1.put("SIZE", "Vla2");
myMap1.put("PROGRESS", "Vla2");
myMap.add(0,myMap1);
myMap.add(1,myMap1);
for (Map<String, String> map : myMap) {
System.out.println(map.get("URL"...
Check for changes to an SQL Server table?
... changes.
It is only a primitive checksum and no cyclic redundancy check (CRC) calculation.
Therefore you can't use it to detect all changes, e. g. symmetrical changes result in the same CHECKSUM!
E. g. the solution with CHECKSUM_AGG(BINARY_CHECKSUM(*)) will always deliver 0 for all 3 tables with...
Consistency of hashCode() on a Java string
...
Something different, because you seem to need a number: How about using CRC32 or MD5 instead of hashcode and you are good to go - no discussions and no worries at all...
share
|
improve this answ...
SQL SELECT speed int vs varchar
...ing algorithms themselves are slow, so you do not benefit from things like CRC64 and smaller. For over 12 years I developed search algorithms for multi-county search engines and 7 years for the credit bureaus. Anything you can keep in numeric the faster... for example phone numbers, zip codes, even ...
PHP function to generate v4 UUID
...
@PavlePredic mt_srand(crc32(serialize([microtime(true), 'USER_IP', 'ETC']))); (i'm another wiliam :P)
– Wiliam
Mar 24 '13 at 13:41
...