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When would anyone use a union? Is it a remnant from the C-only days?
...llocated (perhaps they are in-place constructed in a map, or members of an array).
And now, an example, with a UML class diagram:
The situation in plain English: an object of class A can have objects of any class among B1, ..., Bn, and at most one of each type, with n being a pretty big number,...
Convert String to SecureString
...is:
string password = "test";
SecureString sec_pass = new SecureString();
Array.ForEach(password.ToArray(), sec_pass.AppendChar);
sec_pass.MakeReadOnly();
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Ruby: Easiest Way to Filter Hash Keys?
...ct { |key| key.to_s.match(/^choice\d+/) }
and this will give the just an Array of the keys e.g. [:choice1, :choice2, :choice3]
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How to randomly select an item from a list?
... will always return 'c'
For samples of one or more items, returned as an array, pass the size argument:
np.random.choice(foo, 5) # sample with replacement (default)
np.random.choice(foo, 5, False) # sample without replacement
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How do I use reflection to call a generic method?
...the method name as a string in Type.GetMethod and arguments as the objects array in MethodInfo.Invoke.
Below is a simple example that illustrates how some errors can be caught at compile time (commented code) and other at runtime. It also shows how the DLR tries to resolve which method to call.
in...
Selecting empty text input using jQuery
... Doing "input[id=..]" is not the same as "#". # does not give you an array of objects.
– dev4life
Oct 14 '19 at 18:45
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How to get the data-id attribute?
...he string to a JavaScript value (this includes booleans, numbers, objects, arrays, and null). A value is only converted to a number if doing so doesn't change the value's representation. For example, "1E02" and "100.000" are equivalent as numbers (numeric value 100) but converting them would alter t...
C++, copy set to vector
... Your first vector initialization is incorrect. You create an array of input,size() empty entries and then append the appends after that. I think you mean to use std::vector<double> output; output.reserve(input.size()); std::copy(...);.
– Alexis Wilke
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How to clear jQuery validation error messages?
...this case, for some reason, there are no elements in the "currentElements" array within the validator, so executing .resetForm() does absolutely nothing.
There are bugs posted on this.
Until such time as they fix them, you need to use Nick Craver's answer, NOT Parrots' accepted answer.
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How do I print out the contents of an object in Rails for easy debugging?
... Can you be more specific? Are you saying, what if a variable is an array or hash? Their #to_s would take care of that.
– Chris Ledet
Jan 28 '11 at 15:42
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