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MVVM in WPF - How to alert ViewModel of changes in Model… or should I?

... RaisePropertyChanged("ViewModelCopyOfSomeProperty"); } But typically this is only needed if more than one object will be making changes to the Model's data, which is not usually the case. If you ever have a case where you don't actually have a reference to your Model property to attach t...
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Checking if a string can be converted to float in Python

...False print(isfloat("12.34.56")) False Two dots not allowed. print(isfloat("#56")) False print(isfloat("56%")) False print(isfloat("0E0")) True print(isfloat("x86E0")) False print(isfloat("86-5")) ...
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Creating an abstract class in Objective-C

I'm originally a Java programmer who now works with Objective-C. I'd like to create an abstract class, but that doesn't appear to be possible in Objective-C. Is this possible? ...
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Expand Python Search Path to Other Source

.... Remember that when you distribute your project to other users, they typically install it in such a manner that the Python code files will be automatically detected by Python's importer (i.e. packages are usually installed in the site-packages directory), so if you mess with sys.path in your code, ...
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What do *args and **kwargs mean? [duplicate]

...r **kwargs as the last items in your function definition’s argument list allows that function to accept an arbitrary number of arguments and/or keyword arguments. For example, if you wanted to write a function that returned the sum of all its arguments, no matter how many you supply, you could wr...
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Differences and relationship between glActiveTexture and glBindTexture

...ve "texture unit". Each texture unit can have multiple texture targets (usually GL_TEXTURE_1D, 2D, 3D or CUBE_MAP). 4 Answe...
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Resize fields in Django Admin

...awy to this in a form? I did not find a way to set the attrs attribute for all Textareas. – Julian Sep 5 '16 at 11:33 1 ...
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How to “EXPIRE” the “HSET” child key in redis?

I need to expire all keys in redis hash, which are older than 1 month. 11 Answers 11 ...
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PyLint, PyChecker or PyFlakes? [closed]

...plus for everybody, but I like it ;-) Cons of PyLint: Some rules are really strict. I know that you can change it and that the default is to match PEP8, but is it such a crime to write 'for x in seq'? Apparently yes because you can't write a variable name with less than 3 letters. I will change ...
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Managing constructors with many parameters in Java

...ing to keep track of any kind of argument order, since any order of those calls will work equally well. share | improve this answer | follow | ...