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How can I reset or revert a file to a specific revision?
... avoid any mistakes if foo is anything special (like a directory or a file called -f). With git, if you're unsure, always prefix all files and directories with the special argument --.
– Mikko Rantalainen
Mar 18 '13 at 7:22
...
C++, variable declaration in 'if' expression
...y and not subtle. With other operators -- even assignment! -- and function call arguments you are right, but not with the short-circuit operators.
– Peter - Reinstate Monica
How to round to 2 decimals with Python?
...
That is called bankers rounding. It rounds towards the even number. It's in the IEEE 754 standard for floating point numbers. en.wikipedia.org/wiki/Rounding#Round_half_to_even
– rolisz
Dec 9 '1...
Git Push error: refusing to update checked out branch
...could push to that branch inbetween, the user would get itself in what git calls detached head mode:
A ← B ← X
↑ ↑
[HEAD] [branch1]
Now the user is not in branch1 anymore, without having explicitly asked to check out another branch. Worse, the user is now outside any branch, and any...
What is data oriented design?
...is:
class Ball {
Point position;
Color color;
double radius;
void draw();
};
And then you would create a collection of balls like this:
vector<Ball> balls;
Data Oriented Approach
In Data Oriented Design, however, you are more likely to write the code like this:
class Balls {...
Getting number of elements in an iterator in Python
...ave an answer, this answer avoids instantiation of a list, and it is empirically faster by a constant than the reduce method listed above.
– Phillip Nordwall
Aug 2 '12 at 15:27
5
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WCF service startup error “This collection already contains an address with scheme http”
...on containing a WCF service contract and a Silverlight control which makes calls to that WCF service. On my development and test servers it works great.
...
Python Progress Bar
...e_progress(progress)" but not the test script. Don't forget to import sys. Call this whenever you need to display or update the progress bar.
This works by directly sending the "\r" symbol to console to move cursor back to the start. "print" in python does not recongise the above symbol for this pu...
SQL Server database backup restore on lower version
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You can use functionality called Export Data-Tier Application which generates .bacpac file consisting database schema and data.
On destination server, you can use Import Data-Tier Application option which creates and populates new database from pre-c...
Is there any pythonic way to combine two dicts (adding values for keys that appear in both)?
...gt;> A + B
Counter({'c': 7, 'b': 5, 'd': 5, 'a': 1})
Counters are basically a subclass of dict, so you can still do everything else with them you'd normally do with that type, such as iterate over their keys and values.
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