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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...
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...
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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
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@PavlePredic mt_srand(crc32(serialize([microtime(true), 'USER_IP', 'ETC']))); (i'm another wiliam :P)
– Wiliam
Mar 24 '13 at 13:41
...
Utilizing multi core for tar+gzip/bzip compression/decompression
... for pigz decompression are used for reading, writing, and calculating the CRC. When compressing on the other hand, pigz gets close to a factor of n improvement with n cores.
– Mark Adler
Feb 20 '13 at 16:18
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