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Why would I make() or new()?
...literals.
new can be used to allocate values such as integers, &int is illegal:
new(Point)
&Point{} // OK
&Point{2, 3} // Combines allocation and initialization
new(int)
&int // Illegal
// Works, but it is less convenient to write than new(int)
var i int
&i
...
Why is my program slow when looping over exactly 8192 elements?
Here is the extract from the program in question. The matrix img[][] has the size SIZE×SIZE, and is initialized at:
2 An...
Check if a temporary table exists and delete if it exists before creating a temporary table
I am using the following code to check if the temporary table exists and drop the table if it exists before creating again. It works fine as long as I don't change the columns. If I add a column later, it will give an error saying "invalid column". Please let me know what I am doing wrong.
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What is the difference between . (dot) and $ (dollar sign)?
What is the difference between the dot (.) and the dollar sign ($) ?
13 Answers
13
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What does axis in pandas mean?
Here is my code to generate a dataframe:
21 Answers
21
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what is faster: in_array or isset? [closed]
This question is merely for me as I always like to write optimized code that can run also on cheap slow servers (or servers with A LOT of traffic)
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Printing hexadecimal characters in C
...
You are seeing the ffffff because char is signed on your system. In C, vararg functions such as printf will promote all integers smaller than int to int. Since char is an integer (8-bit signed integer in your case), your chars are being promoted to int via sign-ex...
How to make a background 20% transparent on Android
...of a Textview about 20% transparent (not fully transparent), where there is a color in the background (i.e. white)?
18 An...
When is it practical to use Depth-First Search (DFS) vs Breadth-First Search (BFS)? [closed]
...nd location of solutions (aka searched-for items).
If you know a solution is not far from the root of the tree, a
breadth first search (BFS) might be better.
If the tree is very deep and solutions are rare, depth first search
(DFS) might take an extremely long time, but BFS could be faster.
If th...
Git fetch remote branch
...ecent versions of Git:
git checkout --track origin/daves_branch
--track is shorthand for git checkout -b [branch] [remotename]/[branch] where [remotename] is origin in this case and [branch] is twice the same, daves_branch in this case.
For Git 1.5.6.5 you needed this:
git checkout --track -b d...