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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...
Determining the last changelist synced to in Perforce
A question that occasionally arises is what is the best way to determine the changelist that you last synced to in Perforce. This is often needed for things like injecting the changelist number into the revision info by the automatic build system.
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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
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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...
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...
How to get a string after a specific substring?
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The easiest way is probably just to split on your target word
my_string="hello python world , i'm a beginner "
print my_string.split("world",1)[1]
split takes the word(or character) to split on and optionally a limit to the number of spl...
Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
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The purpose of the activation function is to introduce non-linearity into the network
in turn, this allows you to model a response variable (aka target variable, class label, or score) that varies non-linearly with its explanatory variables
non-linear means that...
Loading cross-domain endpoint with AJAX
...trying to load a cross-domain HTML page using AJAX but unless the dataType is "jsonp" I can't get a response. However using jsonp the browser is expecting a script mime type but is receiving "text/html".
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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
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