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Why does this C++ snippet compile (non-void function does not return a value) [duplicate]
...exception throws or longjmps in the function itself, as well as all of its callees.
While it is quite easy for a compiler to identify a function that looks like it might be missing a return, it is considerably harder to prove that it is missing a return. In order to lift compiler vendors of this bu...
What does the question mark operator mean in Ruby?
...
In your example
product.valid?
Is actually a function call and calls a function named valid?. Certain types of "test for condition"/boolean functions have a question mark as part of the function name by convention.
...
How many constructor arguments is too many?
Let's say you have a class called Customer, which contains the following fields:
15 Answers
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How to remove auto focus/keyboard popup of a field when the screen shows up?
...utMode in AndroidManifest.xml file can be ORed with other values. Mode typically implies single values but in this case, the value is a collection of flags. Description of values: Formats: flag Values: adjustNothing, adjustPan, adjustResize, adjustUnspecified, stateAlwaysHidden, stateAlwaysVisible, ...
Guid is all 0's (zeros)?
...
Use the static method Guid.NewGuid() instead of calling the default constructor.
var responseObject = proxy.CallService(new RequestObject
{
Data = "misc. data",
Guid = Guid.NewGuid()
});
...
Union of dict objects in Python [duplicate]
...sely, the |= augmented assignment has been implemented to mean the same as calling the update method:
>>> a = {"a":1}
>>> a |= {"b": 2}
>>> a
{'a': 1, 'b': 2}
For details, check PEP-584
Original answer from 2012
If you need both dicts to remain independent, and upda...
Differences between socket.io and websockets
...of WebSockets as you described in #2, and probably more importantly it provides fail-overs to other protocols in the event that WebSockets are not supported on the browser or server. I would avoid using WebSockets directly unless you are very familiar with what environments they don't work and you a...
How do you read from stdin?
...'s a few ways to do it.
sys.stdin is a file-like object on which you can call functions read or readlines if you want to read everything or you want to read everything and split it by newline automatically. (You need to import sys for this to work.)
If you want to prompt the user for input, you ca...
vector::at vs. vector::operator[]
...kes more easily; most debug versions of standard libraries do this automatically for you). You do not want to use exceptions that can be swallowed upstream to report programmer mistakes: you want to be able to fix the bug.
Since it is unlikely that an out of bounds access to a vector is part of the...
Floating point vs integer calculations on modern hardware
...ach either 0 or +/-inf very very quickly, which may or may not be (theoretically) treated as a special case/fastpatheed by certain fpu implementations.
– vladr
Jan 3 '13 at 18:18
3...