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How to validate phone numbers using regex
...ut it does exactly what you want.
For example, it will recognize that:
15555555555
is a possible number but not a valid number. It also supports countries outside the US.
Highlights of functionality:
Parsing/formatting/validating phone numbers for all countries/regions of the world.
getNumb...
Is it worth using Python's re.compile?
...s the output on my machine:
<pre>
$ regexTest.py
noncompiled took 4.555 seconds.
compiled took 2.323 seconds.
reallyCompiled took 2.325 seconds.
compiledInLoop took 4.620 seconds.
reallyCompiledInLoop took 4.074 seconds.
r1 = 2000000
r2 = 2000000
r3 = 2000000
r4 = 2000000
r5 = 20000
Th...
由12306.cn谈谈网站性能技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，你就需要有一个或是多个调度来让你的前端程序知道去哪里找数据。把火车票的数据分区，并放在各个省市，会对12306这个系统有非常有意义的质的性能的提高。
四、后端系统负载均衡
前面说了数据分区，数据分区可以在一...
Java Stanford NLP: Part of Speech labels?
...for the sake of completness):
http://www.surdeanu.info/mihai/teaching/ista555-fall13/readings/PennTreebankConstituents.html
It also includes tags for clause and phrase levels.
Clause Level
- S
- SBAR
- SBARQ
- SINV
- SQ
Phrase Level
- ADJP
- ADVP
- CONJP
- FRAG
- INTJ
- LST
- NAC
- NP
- NX
- ...
C# 'is' operator performance
...ode:
Stopwatch:
As: 561ms
Is: 597ms
Base property: 539ms
Base field: 555ms
Base RO field: 552ms
Virtual GetEnumType() test: 556ms
Virtual IsB() test: 588ms
Create Time : 10416ms
UtcNow:
As: 499ms
Is: 532ms
Base property: 479ms
Base field: 502ms
Base RO field: 491ms
Virtual GetEnumTy...
How to remove the border highlight on an input text element
...h: 100%;
text-align: center;
margin: 2em auto;
border: 1px solid #555
}
button,
.wrapper {
border-radius: 3px;
}
button {
padding: .25em 1em;
}
input,
label {
color: white !important;
}
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materiali...
How does the Java 'for each' loop work?
...teratorVsIndexIntArray 1000000
Test A: 326,373,762 nanoseconds
Test B: 202,555,566 nanoseconds
B faster by 123,818,196 nanoseconds (37.437545972215744% faster)
I also ran this for an Integer array, and indexes are still the clear winner, but only between 18 and 25 percent faster.
For collections,...
What do the terms “CPU bound” and “I/O bound” mean?
... 623.44 3.72
sha-test 555.56 227.27 2.44
zip-test 363.64 166.67 2.18
MARK RESULTS TABLE
Mark Name MultiCore SingleCore Scaling
-------------...
What is the difference between a URI, a URL and a URN?
.../download.zip
mailto:user@example.com
file:///home/user/file.txt
tel:1-888-555-5555
http://example.com/resource?foo=bar#fragment
/other/link.html (A relative URL, only useful in the context of another URL)
URLs always start with a protocol (http) and usually contain information such as the network...
How do I profile memory usage in Python?
...py:537: 0.7 KiB
self.update(*args, **kwds)
#2: collections/__init__.py:555: 0.6 KiB
return _heapq.nlargest(n, self.items(), key=_itemgetter(1))
#3: python3.6/heapq.py:569: 0.5 KiB
result = [(key(elem), i, elem) for i, elem in zip(range(0, -n, -1), it)]
10 other: 2.2 KiB
Total allocated s...