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App Inventor 2 DynamicComponents 拓展：动态创建AI2组件对象 · App Inventor 2 中文网
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DynamicComponents 拓展
.aix 拓展下载（最新版 v2.3.0）：
com.yusufcihan.DynamicComponents.aix
完全支持 App Inventor 2 的动态组件扩展。它基于 Java 的反射功能，因此只需键入类名称即可搜索类来创建组件。因此，...
Syntax highlighting/colorizing cat
... "\033[31m"
fi
cat $1
echo -en "\033[0m"
The above (on a terminal that supports those escape sequences) will print any text file as 'bold', and will print any binary file as red. You can use strings instead of cat for printing binary files and you can enhance the logic to make it suit your needs.
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Embedding Python in an iPhone app
So it's a new millennium; Apple has waved their hand; it's now legal to include a Python interpreter in an iPhone (App Store) app.
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Facebook Callback appends '#_=_' to Return URL
Facebook callback has started appending #_=_ hash underscore to the Return URL
23 Answers
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Update a record without first querying?
... @BrainSlugs83 - try using EF across link servers that only support OpenQuery - lots of fun. Sometimes you absolutely need raw SQL to get the job done. Not always can you draw the code into isolation for testing. Its not a perfect world out there.
– barrypicker
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Why does a return in `finally` override `try`?
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According to ECMA-262 (5ed, December 2009), in pp. 96:
The production TryStatement : try Block Finally is evaluated as follows:
Let B be the result of evaluating Block.
Let F be the result of evaluating Finally.
If F.type is normal, return B.
Return F.
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How to know if user is logged in with passport.js?
...ext();
} else {
res.redirect('/login');
}
}
And use it:
app.get('/orders', loggedIn, function(req, res, next) {
// req.user - will exist
// load user orders and render them
});
share
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How to prettyprint a JSON file?
...et with <pre> and </pre> otherwise the whitespace will get stripped when rendered in the browser.
– phyatt
Jun 5 '18 at 21:24
8
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How to find list of possible words from a letter matrix [Boggle Solver]
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@shellscape, it's Python 2 code. Python 3 dropped the ability to deconstruct arguments, like def neighbors((x, y)) (pointlessly, as far as I can see). Also it requires parentheses around the argument to print.
– Darius Bacon
Feb 15...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...代品。目前已经在chrome、safari等知名软件中运用。
根据官方测试报告，ptmalloc在一台2.8GHz的P4机器上（对于小对象）执行一次malloc及free大约需要300纳秒。而TCMalloc的版本同样的操作大约只需要50纳秒。
小对象分配
tcmalloc为每...