...want to make the fewest possible modifications to it. The Visitor pattern allows you to move each new operation in a suitable class, and you need to extend the hierarchy's interface only once. Let's do it. First, we define an abstract operation (the "Visitor" class in GoF) which has a method for ev...

...specific default value could even be correct? If the iterator doesn't actually iterate, then an out-of-band value is more meaningful than some misleading function-specific default. – S.Lott Jan 26 '10 at 11:44 ...

...a couple functions I found that I was able to increment the figure count, call draw manually, etc, but I needed to do these before and after every plotting call. So to create both an interactive plotting wrapper and an offscreen plotting wrapper, I found it was more efficient to do this via metacla...

...s of other questions similar to this ( here , here and here ), but they all have accepted answers that don't solve my problem. The best solution I have found to the problem is the StyledMarker library, which does let you define custom colours for markers, but I can't get it to use the default m...

... retaining the copy. Assign Assign is somewhat the opposite to copy. When calling the getter of an assign property, it returns a reference to the actual data. Typically you use this attribute when you have a property of primitive type (float, int, BOOL...) Retain retain is required when the attribut...

... This assumes a latin alphabet, where Char.IsLetter allows for non-latin alphabets. – Paul van Brenk Jul 28 '09 at 7:31 5 ...

...tive to the current working directory and is not changed by an os.chdir() call.) To get the current working directory use import os cwd = os.getcwd() Documentation references for the modules, constants and functions used above: The os and os.path modules. The __file__ constant os.path.rea...

... You might even want to set it "" (no space) to have no separation at all. – mschilli Aug 8 '13 at 13:11 9 ...

...n other programs, and also include code to evaluate only when the file is called as a standalone script. It's important to understand that all of the code above the if __name__ line is being executed, evaluated, in both cases. It's evaluated by the interpreter when the file is imported or when it'...

... .rehash = udp_v4_rehash, .get_port = udp_v4_get_port, .memory_allocated = &udp_memory_allocated, .sysctl_mem = sysctl_udp_mem, .sysctl_wmem = &sysctl_udp_wmem_min, .sysctl_rmem = &sysctl_udp_rmem_min, .obj_size = sizeof(struct udp_sock), .h.udp_table = &udp_tab...