大约有 570 项符合查询结果（耗时：0.0384秒） [XML]
Scala vs. Groovy vs. Clojure [closed]
... community wiki
3 revs, 2 users 96%Mehmet Duran
24
...
Access lapply index names inside FUN
...ormance loss? Yes! here are the benchmarks:
> x <- as.list(seq_len(1e6))
> system.time( y <- lapply(x, function(x){parent.frame()$i[]}) )
user system elapsed
2.38 0.00 2.37
> system.time( y <- lapply(x, function(x){parent.frame()$i[]}) )
user system elapsed
2.45 0.00 2.45
> sy...
No module named setuptools
...ocal\pip\Cache\wheels\e0\f2\a7\c57f6d153c440b93bd24c1243123f276dcacbf43cc43b7f906
Running setup.py bdist_wheel for httplib2 ... done
Stored in directory: C:\Users\Cees.Timmerman\AppData\Local\pip\Cache\wheels\e1\a3\05\e66aad1380335ee0a823c8f1b9006efa577236a24b3cb1eade
Successfully built twilio h...
How do I check out a remote Git branch?
...jects: 100% (69/69), done.
From https://github.com/githubuser/repo-name
e6ef1e0..5029161 develop -> origin/develop
* [new branch] demo -> origin/demo
d80f8d7..359eab0 master -> origin/master
$ git checkout demo
Branch demo set up to track remote branch demo from ...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...tcmalloc这里版本较旧)。
4.3.2 mysql优化
测试环境：2x Intel E5/2.2Ghz with 8 real cores per socket，16 real cores， 开启hyper-threading， 总共32个vcpu。 16个table，每个5M row。
OLTP_RO测试包含5个select查询：select_ranges, select_order_ranges, select_distinct_ran...
how to check redis instance version?
...version:3.2.12
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:9c3b73db5f7822b7
redis_mode:standalone
os:Linux 2.6.32.43-tlinux-1.0.26-default x86_64
arch_bits:64
multiplexing_api:epoll
gcc_version:4.9.4
process_id:5034
run_id:a45b2ffdc31d7f40a1652c235582d5d277eb5eec
...
Determine the line of code that causes a segmentation fault?
...ge.
#0 0x5654348db19f in main /tmp/tmp.s3gwjqb8zT/main.c:3
#1 0x7f0e5a052b6a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x26b6a)
#2 0x5654348db099 in _start (/tmp/tmp.s3gwjqb8zT/a.out+0x1099)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /t...
What would be C++ limitations compared C language? [closed]
... community wiki
5 revs, 2 users 96%Pete Kirkham
21
...
How to create a GUID/UUID in Python
...5(uuid.NAMESPACE_DNS, 'python.org')
UUID('886313e1-3b8a-5372-9b90-0c9aee199e5d')
>>> # make a UUID from a string of hex digits (braces and hyphens ignored)
>>> x = uuid.UUID('{00010203-0405-0607-0809-0a0b0c0d0e0f}')
>>> # convert a UUID to a string of hex digits in stand...
How do MySQL indexes work?
... community wiki
5 revs, 3 users 96%clarete
2
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