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Inversion of Control vs Dependency Injection
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IoC is a generic term meaning rather than having the application call the methods in a framework, the framework calls implementations provided by the application.
DI is a form of IoC, where implementations are passed into an object through constructors/setters/service lookups, which the ob...
Days between two dates? [duplicate]
...est for calendar checks.
from datetime import timedelta, datetime
def cal_days_diff(a,b):
A = a.replace(hour = 0, minute = 0, second = 0, microsecond = 0)
B = b.replace(hour = 0, minute = 0, second = 0, microsecond = 0)
return (A - B).days
if __name__ == '__main__':
x = datetime...
How to paste yanked text into the Vim command line
...you know how to use them you cannot live without them.
Registers are basically storage locations for strings. Vim has many registers that work in different ways:
0 (yank register: when you use y in normal mode, without specifying a register, yanked text goes there and also to the default register...
Putty: Getting Server refused our key Error
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OK, there was a small typo in my key. Apparently when pasting to file the first letter was cut off and it started with sh-rsa instead of ssh-rsa.
nrathathaus - your answer was very helpful, thanks a lot, this answer is credited to you :) I di...
Purpose of Python's __repr__
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__repr__ should return a printable representation of the object, most likely one of the ways possible to create this object. See official documentation here. __repr__ is more for developers while __str__ is for end users.
A ...
What is Node.js? [closed]
I don't fully get what Node.js is all about. Maybe it's because I am mainly a web based business application developer. What is it and what is the use of it?
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Fastest sort of fixed length 6 int array
...ction pipeline to stall.
Here's an insertion sort implementation:
static __inline__ int sort6(int *d){
int i, j;
for (i = 1; i < 6; i++) {
int tmp = d[i];
for (j = i; j >= 1 && tmp < d[j-1]; j--)
d[j] = d[j-1]...
How to dump a dict to a json file?
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you can supply all those parameters to dump(sample, file, ...) too. The extra step of writing to a string is not needed. dump internally writes in chunks. This could be more efficient than to compile a (possibly huge) string first.
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How to keep a .NET console app running?
... a Console application that starts up some services in a separate thread. All it needs to do is wait for the user to press Ctrl+C to shut it down.
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Javascript - removing undefined fields from an object [duplicate]
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You actually don't even need the ternary operator. Instead you can do (obj[key]===undefined&& delete obj[key]) The reason this works is because and uses short-circuit evaluation, so once the first check fails the second isn'...