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Why dict.get(key) instead of dict[key]?
...
It allows you to provide a default value if the key is missing:
dictionary.get("bogus", default_value)
returns default_value (whatever you choose it to be), whereas
dictionary["bogus"]
would raise a KeyError.
If omitted...
Can lambda functions be templated?
...auto x){}; // imaginary syntax
}
In a constrained template you can only call other constrained templates. (Otherwise the constraints couldn't be checked.) Can foo invoke bar(x)? What constraints does the lambda have (the parameter for it is just a template, after all)?
Concepts weren't ready to t...
Check that an email address is valid on iOS [duplicate]
...ailString@email.com" isValidEmail]) { /* True */ }
if([@"InvalidEmail@notreallyemailbecausenosuffix" isValidEmail]) { /* False */ }
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Why can't non-default arguments follow default arguments?
...wed. A SyntaxError is raised if the arguments are not given in the correct order:
Let us take a look at keyword arguments, using your function.
def fun1(a="who is you", b="True", x, y):
... print a,b,x,y
Suppose its allowed to declare function as above,
Then with the above declarations, we c...
How to generate a random number in C++?
...
The most fundamental problem of your test application is that you call srand once and then call rand one time and exit.
The whole point of srand function is to initialize the sequence of pseudo-random numbers with a random seed.
It means that if you pass the same value to srand in two differ...
/bin/sh: pushd: not found
...d by child processes. (A hypothetical pushd command might do the chdir(2) call and then start a new shell, but ... it wouldn't be very usable.) pushd is a shell builtin, just like cd.
So, either change your script to start with #!/bin/bash or store the current working directory in a variable, do yo...
Difference between ApiController and Controller in ASP.NET MVC
...e best of both worlds: Controllers for Views, ApiControllers for data.
In order to do that, you need to do the following:
Install the following Web API packages using NuGet: Microsoft.AspNet.WebApi.Core and Microsoft.AspNet.WebApi.WebHost.
Add one or more ApiControllers to your /Controllers/ fold...
What's the pythonic way to use getters and setters?
...ey: No. References to ._x (which isn't a property, just a plain attribute) bypass the property wrapping. Only references to .x go through the property.
– ShadowRanger
Jul 19 '19 at 10:52
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Convert a python 'type' object to a string
...gt;
>>> print type(e).__name__
A
>>>
what do you mean by convert into a string? you can define your own repr and str_ methods:
>>> class A(object):
def __repr__(self):
return 'hei, i am A or B or whatever'
>>> e = A()
>>> e
hei, i am A or...
How do you automatically set text box to Uppercase?
...le="text-transform:uppercase" />
<img src="../images/tickmark.gif" border="0" />
Please note this transformation is purely visual, and does not change the text that is sent in POST.
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