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I need to store postal codes in a database. How big should the column be?
... region, you would select the first half of the postal code. Having this information in a separate table really won't help anything and would be more complicated to maintain.
– RevNoah
Dec 2 '13 at 17:08
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海量数据相似度计算之simhash和海明距离 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...把每个词变成hash值，比如“美国”通过hash算法计算为 100101,“51区”通过hash算法计算为 101011。这样我们的字符串就变成了一串串数字，还记得文章开头说过的吗，要把文章变为数字计算才能提高相似度计算性能，现在是降维过...
BigDecimal setScale and round
... BigDecimal getting set? How are you outputting the value (using a String.format() might hide significant digits)?
– dale peters
Oct 25 '16 at 14:58
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How do I use the lines of a file as arguments of a command?
... shortcut to use the < operator. It means that the shell itself will perform the redirection rather than executing the cat binary for it's redirection properties.
– lstyls
Oct 30 '17 at 23:48
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In Gradle, is there a better way to get Environment Variables?
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I couldn't get the form suggested by @thoredge to work in Gradle 1.11, but this works for me:
home = System.getenv('HOME')
It helps to keep in mind that anything that works in pure Java will work in Gradle too.
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Python: Append item to list N times
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Or combine both suggestions into the form of a.extend(b*n) where n is the times you want to repeat elements in b
– DarkCygnus
Feb 8 '18 at 19:07
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Is there a way to list pip dependencies/requirements?
...on-dateutil amqplib
Admittedly, this does leave some cruft around in the form of temporary files, but it does accomplish the goal. If you're doing this with virtualenv (which you should be), the cleanup is as easy as removing the <virtualenv root>/build directory.
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How can I increment a date by one day in Java?
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Something like this should do the trick:
String dt = "2008-01-01"; // Start date
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar c = Calendar.getInstance();
c.setTime(sdf.parse(dt));
c.add(Calendar.DATE, 1); // number of days to add
dt = sdf.format(c.getTime());...
Is there any downside for using a leading double slash to inherit the protocol in a URL? i.e. src=“/
...it in RFC 1630 the year before (stated differently, but still allowing the format in question). It could well have been in one form or other of the document that used to be at ftp://info.cern.ch/pub/www/doc/http-spec.txt starting in 1991, should anyone have an archive copy.
– J...
How do I convert uint to int in C#?
...: 0000000000 (00-00-00-00)
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int....: 0000000001 (01-00-00-00)
asUint.: 0000000001 (01-00-00-00)
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int....: -0000000001 (FF-FF-FF-FF)
asUint.: 4294967295 (FF-FF-FF-FF)
------------------------------
int....: 2147483647 (FF-FF-FF-7F)
asUint.: ...