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How do I create a random alpha-numeric string in C++?
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C++11 allows you to separate the generator from the engine, but what is best depends on what the needs of your application are. This is why my first snippet uses rand and the second does not.
– Carl
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Is 1.0 a valid output from std::generate_canonical?
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@user quality of implementation - all the things that make one conformant implementation better than another e.g. performance, behavior in edge cases, helpfulness of error messages.
– ecatmur
Sep 4 '14 at 20:09
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How can I manipulate the strip text of facet_grid plots?
...ts. My question
is similar to a question on plot titles , but I'm specifically concerned with
manipulating not the plot title but the text that appears in facet titles (strip_h).
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Hidden Features of MySQL
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Since you put up a bounty, I'll share my hard won secrets...
In general, all the SQLs I tuned today required using sub-queries. Having come from Oracle database world, things I took for granted weren’t working the same with MySQL. And my reading on MySQL tuning makes me conclude that MySQL is be...
布局列表框循序渐进：从商品清单到购物车和网络分页 · App Inventor 2 中文网
...滚动。
第 1–6、9 关使用同一个列表实例：布局列表框_商品，宽、高均为填充父级，方向纵向，列数 1，空提示文本为“没有匹配的商品”。搜索和操作条放在列表外面。
在列表里面直接拖入 竖直布局_商品行，宽填充父级...
How to get the contents of a webpage in a shell variable?
...get google.com -q -O -)
echo $content
We use the -O option of wget which allows us to specify the name of the file into which wget dumps the page contents. We specify - to get the dump onto standard output and collect that into the variable content. You can add the -q quiet option to turn off's wg...
regex.test V.S. string.match to know if a string matches a regular expression
...sion
Use .test if you want a faster boolean check. Use .match to retrieve all matches when using the g global flag.
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source of historical stock data [closed]
I'm trying to make a stock market simulator (perhaps eventually growing into a predicting AI), but I'm having trouble finding data to use. I'm looking for a (hopefully free) source of historical stock market data.
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How to get share counts using graph API
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How much is the API call limit for each request?
– StErMi
Dec 9 '14 at 16:53
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How to get the value from the GET parameters?
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JavaScript itself has nothing built in for handling query string parameters.
Code running in a (modern) browser you can use the URL object (which is part of the APIs provided by browsers to JS):
var url_string = "http://www.example.com/t.html?a=1&b=3&c=m2-m3-m4-...