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How do I check if a string is unicode or ascii?

... In Python 3, all strings are sequences of Unicode characters. There is a bytes type that holds raw bytes. In Python 2, a string may be of type str or of type unicode. You can tell which using code something like this: def whatisthis(s):...
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How much is the overhead of smart pointers compared to normal pointers in C++?

..._ptr always has memory overhead for reference counter, though it is very small. std::unique_ptr has time overhead only during constructor (if it has to copy the provided deleter and/or null-initialize the pointer) and during destructor (to destroy the owned object). std::shared_ptr has time overhe...
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Using Sinatra for larger projects via multiple files

It seems that in Sinatra all route handlers are being written into a single file, if I understand right it acts as a one large/small controller. Is there any way to split it into separate independent files, so when let's say somebody calls "/" - one action is executed, and if smth like "/posts/2" is...
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TypeError: 'module' object is not callable

...> This is what the error message means: It says module object is not callable, because your code is calling a module object. A module object is the type of thing you get when you import a module. What you were trying to do is to call a class object within the module object that happens to have ...
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Accessing a Shared File (UNC) From a Remote, Non-Trusted Domain With Credentials

... The way to solve your problem is to use a Win32 API called WNetUseConnection. Use this function to connect to a UNC path with authentication, NOT to map a drive. This will allow you to connect to a remote machine, even if it is not on the same domain, and even if it has a diff...
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Iterating over each line of ls -l output

... instead of parsing output of "ls -l" line by line, you could iterate over all files and do an "ls -l" for each individual file like this: for x in * ; do echo `ls -ld $x` ; done share | improve t...
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What's the difference between IEquatable and just overriding Object.Equals()?

...t you avoid a cast from System.Object which can make a difference if it's called frequently. As noted on Jared Parson's blog though, you still must implement the Object overrides. share | improve t...
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How to query MongoDB with “like”?

... Actually, it depends. If the query doesn't use an index, and must do a table scan, then it can certainly be expensive. If you're doing a 'starts with' regex query, then that can use an index. Best to run an explain() to see what'...
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Get the Query Executed in Laravel 3/4

... Laravel 4+ In Laravel 4 and later, you have to call DB::getQueryLog() to get all ran queries. $queries = DB::getQueryLog(); $last_query = end($queries); Or you can download a profiler package. I'd recommend barryvdh/laravel-debugbar, which is pretty neat. You can read f...
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How to filter a dictionary according to an arbitrary condition function?

... And here is a good explanation why the function call dict() is slower than the constructor/literal syntax {} doughellmann.com/2012/11/… – dorvak Jul 10 '13 at 9:37 ...