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String formatting: % vs. .format vs. string literal

...aving to be compatible with Python 2.5 To answer your second question, string formatting happens at the same time as any other operation - when the string formatting expression is evaluated. And Python, not being a lazy language, evaluates expressions before calling functions, so in your log.deb...
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What's the “big idea” behind compojure routes?

...ate to a proper response map; Compojure provides sane default handling for strings (as seen above) and a number of other object types; see the compojure.response/render multimethod for details (the code is entirely self-documenting here). Let's try using defroutes now: (defroutes example-routes ...
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Unmangling the result of std::type_info::name

...ures. In file type.hpp #ifndef TYPE_HPP #define TYPE_HPP #include <string> #include <typeinfo> std::string demangle(const char* name); template <class T> std::string type(const T& t) { return demangle(typeid(t).name()); } #endif In file type.cpp (requires C++11) ...
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Call two functions from same onclick [duplicate]

...n overload that translates as one cell in the stack and half a millisecond extra for processing. It is more than worth it for the gain in readability and easy of maintenance. Imagine that in the future you have to add three extra methods, with conditional logic. – Renan ...
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Why is “while ( !feof (file) )” always wrong?

... stream is still in the good() state. C++, iostreams getline: for (std::string line; std::getline(std::cin, line); ) { consume(line); } The result we must use is again std::cin, just as before. POSIX, write(2) to flush a buffer: char const * p = buf; ssize_t n = bufsize; for (ss...
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Securely storing environment variables in GAE with app.yaml

...m google.appengine.ext import ndb class Settings(ndb.Model): name = ndb.StringProperty() value = ndb.StringProperty() @staticmethod def get(name): NOT_SET_VALUE = "NOT SET" retval = Settings.query(Settings.name == name).get() if not retval: retval = Settings() retva...
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How do I call ::std::make_shared on a class with only protected or private constructors?

...and doesn't require a derived class: #include <memory> #include <string> class A { protected: struct this_is_private; public: explicit A(const this_is_private &) {} A(const this_is_private &, ::std::string, int) {} template <typename... T> static ::std:...
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Pandas percentage of total with groupby

... doesn't intuitively make sense (especially when some of the cells contain strings like AZ, ...). – dhardy Feb 6 '15 at 9:42 6 ...
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Java: when to use static methods

...atic imports. Easier, shorter. Adding methods: you really wanted the class String to have a removeSpecialChars() instance method, but it's not there (and it shouldn't, since your project's special characters may be different from the other project's), and you can't add it (since Java is somewhat san...
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How do I set the offset for ScrollSpy in Bootstrap?

... Does this effectively add extra space on the div you're targeting? What if you don't want that? An invisible extra spacing would be ideal. – ahnbizcad Jan 28 '15 at 23:52 ...