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What's the best UML diagramming tool? [closed]
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100
votes
For sequence diagrams, only, try websequencediagrams.com. It's a freemium (...
What's the difference between identifying and non-identifying relationships?
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+------+---------------+-------+--------+
|0 |hp-laser-510 |printer|1000 |
+------+---------------+-------+--------+
|1 |viewsonic-10 |screen |900 |
+------+---------------+-------+--------+
|2 |canon-laser-100|printer|200 |
+------
Convert PDF to clean SVG? [closed]
...tps://bitbucket.org/petermr/ami-core . This is a funded project to capture 100 million facts from the scientific literature (contentmine.org) much of which is PDF.
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Django - what is the difference between render(), render_to_response() and direct_to_template()?
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Yuji 'Tomita' TomitaYuji 'Tomita' Tomita
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How does grep run so fast?
...068s 0:00.26
$ time grep -c ' /cc/merchant.json tg=f_c' 20140910.log
28
0.100u 0.056s 0:00.17
The longer form is 35% faster!
How come? Boyer-Moore consructs a skip-forward table from the pattern-string, and whenever there's a mismatch, it picks the longest skip possible (from last char to first)...
__attribute__ - C/C++ - 清泛网 - 专注C/C++及内核技术
...e(int n) __attribute__ ((const));...
for (i = 0; i < 100; i++ )
{
total += square (5) + i;
}
通过添加__attribute__((const))声明，编译器只调用了函数一次，以后只是直接得到了相同的一个返回值。
事实上，const参数不能用在带...
How to format numbers as currency string?
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100
This idomatic JavaScript, simple and elegant solution is exactly what I was looking for.
– Guilhem Soulas
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How do I combine a background-image and CSS3 gradient on the same element?
...rl('PATH-TO-IMG') center center no-repeat, -webkit-gradient(linear, 0 0, 0 100%, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+
background: url('PATH-TO-IMG') center center no-repeat, -webkit-linear-gradient(top, @startColor, @endColor); // Safari 5.1+, Chrome 10+
background: url('PATH-T...
Python strptime() and timezones?
...Z NAME: None
In [4]: start_time = datetime.strptime('2018-04-18-17-04-30-+1000','%Y-%m-%d-%H-%M-%S-%z')
In [5]: print("TZ NAME: {tz}".format(tz=start_time.tzname()))
TZ NAME: UTC+10:00
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What is the difference between Non-Repeatable Read and Phantom Read?
...tes are included in dirty reads. Example: start a transaction, insert 2 of 100 invoice lines on connection a, now connection b reads those 2 lines before the trx is committed and before the other 98 lines are added, and so doesn't include all info for the invoice. This would be a dirty read involvin...