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海量数据相似度计算之simhash短文本查找 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...以JAVA 来说，存储一个simhash 需要一个原生态 lang 类型是64位 = 8 byte，如果是 Object 对象还需要额外的 8 byte，所以我们尽量节约空间使用原生态的lang类型。假设增长到最大的5000w数据， 5000w * 8byte = 400000000byte = 400000000/( 1024 * 1024) = ...
How to get the filename without the extension in Java?
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you can also use FilenameUtils.getBasename to go straight from a path string to a filename-without-extension.
– Ian Durkan
Jan 28 '11 at 16:37
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Most lightweight way to create a random string and a random hexadecimal number
... I did take a look at the other functions in binascii, they do have base64 and uuencode, but no way to generate the first kind of strings he wants (base36).
– wump
May 6 '10 at 16:49
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Build fat static library (device + simulator) using Xcode and SDK 4+
...within XCode
#
# Author: Adam Martin - http://twitter.com/redglassesapps
# Based on: original script from Eonil (main changes: Eonil's script WILL NOT WORK in Xcode GUI - it WILL CRASH YOUR COMPUTER)
#
set -e
set -o pipefail
#################[ Tests: helps workaround any future bugs in Xcode ]####...
How to compile python script to binary executable
... cross platform.. however, if I had to quickly judge which one to use just based on GitHub stars, PyInstaller has ~4000 stars, cx_Freeze has 200 stars. So PyInstaller seems to be more popular and probably has more edge cases covered. why do you think cx_Freeze is better than PyInstaller?
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AttributeError: 'module' object has no attribute 'urlopen'
....Request(siteurl, headers={'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.100 Safari/537.36'})
pageHTML = urllib.request.urlopen(req).read()
I hope your problem resolved.
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Command line for looking at specific port
...nds up giving the following kind of output:
TCP 192.168.0.105:50466 64.34.119.101:80 ESTABLISHED
TCP 192.168.0.105:50496 64.34.119.101:80 ESTABLISHED
As you can see, this only shows the connections on port 80 for the TCP protocol.
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Android read text raw resource file
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What if you use a character-based BufferedReader instead of byte-based InputStream?
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line = reader.readLine();
while (line != null) { ... }
Don't forget that readLi...
How to automatically generate a stacktrace when my program crashes
...his output:
$ ./test
Error: signal 11:
./test(handler+0x19)[0x400911]
/lib64/tls/libc.so.6[0x3a9b92e380]
./test(baz+0x14)[0x400962]
./test(bar+0xe)[0x400983]
./test(foo+0xe)[0x400993]
./test(main+0x28)[0x4009bd]
/lib64/tls/libc.so.6(__libc_start_main+0xdb)[0x3a9b91c4bb]
./test[0x40086a]
This show...
Convert a character digit to the corresponding integer in C
...strtol() works like this:
long strtol(const char *str, char **endptr, int base);
It converts *str to a long, treating it as if it were a base base number. If **endptr isn't null, it holds the first non-digit character strtol() found (but who cares about that).
...