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Using @property versus getters and setters
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72
While I agree in most cases, be careful about hiding slow methods behind a @property decorator. The user of your API expects that property ...
Why does X[Y] join of data.tables not allow a full outer join, or a left join?
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To quote from the data.table FAQ 1.11 What is the difference between X[Y] and merge(X, Y)?
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What and where are the stack and heap?
...language standard (available at open-std.org/JTC1/SC22/WG14/www/docs/n1256.pdf ), requires a "stack". In fact, the word 'stack' does not even appear in the standard. This answers statements wrt/ to C's stack usage are true in general, but is in no way required by the language. See knosof.co.uk/cbo...
How to automatically generate a stacktrace when my program crashes
...e/dbingham/src/middle-earth-mud/alpha6/src/engine/main.cpp:34(main)[0x8049a72]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5)[0xb7d1b775]
/build/buildd/glibc-2.9/csu/../sysdeps/i386/elf/start.S:122(_start)[0x8049801]
If you want to know the gory details, the best source is unfortunately the ...
What are the effects of exceptions on performance in Java?
...s, result was " + t.getValue()
);
}
}
Result:
method1 took 972 ms, result was 2
method2 took 1003 ms, result was 2
method3 took 66716 ms, result was 2
The slowdown from the try block is too small to rule out confounding factors such as background processes. But the catch block kille...
How do you parse and process HTML/XML in PHP?
... RabbitFish and others. Can be installed via Composer.
HtmlPageDom
Wa72\HtmlPageDom` is a PHP library for easy manipulation of HTML
documents using It requires DomCrawler from Symfony2
components for traversing the
DOM tree and extends it by adding methods for manipulating the DOM
tr...
How do we control web page caching, across all browsers?
...and answer are targeted on "web pages" (HTML pages), not "file downloads" (PDF, zip, Excel, etc). You'd better have them cached and make use of some file version identifier somewhere in URI path or querystring to force a redownload on a changed file. When applying those no-cache headers on file down...
使用 XML 和 Web 服务 · App Inventor 2 中文网
...可，不得转载或使用 隐私策略和使用条款 技术支持 service@fun123.cn
In Python, how do I determine if an object is iterable?
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72
I've been studying this problem quite a bit lately. Based on that my conclusion is that nowaday...
How to generate random SHA1 hash to use as ID in node.js?
...=> 77de68daecd823babbb58edb1c8e14d7106e83bb
4 => 1b6453892473a467d07372d45eb05abc2031647a
5 => ac3478d69a3c81fa62e60f5c3696165a4e5e6ac4
6 => c1dfd96eea8cc2b62785275bca38ac261256e278
It's easy to delude ourselves by thinking just because the output of our function looks very random, tha...