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What is the difference between Θ(n) and O(n)?
...but a Θ(n) algorithm is not Θ(n2).
In fact, since f(n) = Θ(g(n)) means for sufficiently large values of n, f(n) can be bound within c1g(n) and c2g(n) for some values of c1 and c2, i.e. the growth rate of f is asymptotically equal to g: g can be a lower bound and and an upper bound of f. This dir...
How to write a JSON file in C#?
I need to write the following data into a text file using JSON format in C#. The brackets are important for it to be valid JSON format.
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How do I check in JavaScript if a value exists at a certain array index?
Will this work for testing whether a value at position index exists or not, or is there a better way:
18 Answers
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Activate a virtualenv via fabric as deploy user
..., Fabric has a prefix context manager which uses this technique so you can for example:
def task():
with prefix('workon myvenv'):
run('git pull')
run('do other stuff, etc')
* There are bound to be cases where using the command1 && command2 approach may blow up on you...
C++ Redefinition Header Files (winsock2.h)
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This problem is caused when including <windows.h> before <winsock2.h>. Try arrange your include list that <windows.h> is included after <winsock2.h> or define _WINSOCKAPI_ first:
#define _WINSOCKAPI_ // stops windows.h including winsock.h
#include <win...
Fatal error: “No Target Architecture” in Visual Studio
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Heads up: seems including Xinput.h before Windows.h causes this too.
– Jens Åkerblom
Oct 27 '16 at 19:26
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iOS: how to perform a HTTP POST request?
...ng iOS development and I'd like to have one of my first applications to perform a HTTP POST request.
7 Answers
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jQuery Selector: Id Ends With?
Is there a selector that I can query for elements with an ID that ends with a given string?
9 Answers
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How to use if statements in underscore.js templates?
...;/span>
<% } %>
Remember that in underscore.js templates if and for are just standard javascript syntax wrapped in <% %> tags.
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Divide a number by 3 without using *, /, +, -, % operators
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This is a simple function which performs the desired operation. But it requires the + operator, so all you have left to do is to add the values with bit-operators:
// replaces the + operator
int add(int x, int y)
{
while (x) {
int t = (x & y) ...