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How to find time complexity of an algorithm
...s reason, we drop all but the largest terms for large N.
So, now we have gone from 2N + 2 to 2N.
Traditionally, we are only interested in performance up to constant factors.
This means that we don't really care if there is some constant multiple of difference in performance when N is large. The...
What columns generally make good indexes?
... to index it. The below is another example little different from the above one:
SELECT
buyers.buyer_id, /* no need to index */
country.name /* no need to index */
FROM buyers LEFT JOIN country
ON buyers.country_id=country.country_id /* consider to use index */
WHERE
first_name='Tariq' /* cons...
Jenkins Git Plugin: How to build specific tag?
...
None of these answers were sufficient for me, using Jenkins CI v.1.555, Git Client plugin v.1.6.4, and Git plugin 2.0.4.
I wanted a job to build for one Git repository for one specific, fixed (i.e., non-parameterized) tag. I ...
Android: How to put an Enum in a Bundle?
...ood answer, but it can be complemented with a extension method, i use this one here: gist.github.com/Grohden/eea5ff9d5e3ba955aa2f57ff0df2683f
– Gabriel De Oliveira Rohden
Aug 23 '18 at 3:59
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Create a menu Bar in WPF?
I want to create a menu bar identical to the one in windows forms in my WPF application.
4 Answers
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PHP parse/syntax errors; and how to solve them
Everyone runs into syntax errors. Even experienced programmers make typos. For newcomers, it's just part of the learning process. However, it's often easy to interpret error messages such as:
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When to use reinterpret_cast?
...einterpret_cast. And in C++03 a cast of int* to void* was forbidden to be done with reinterpret_cast (although compilers did not implement that and it was impractical, hence was changed for C++11).
– Johannes Schaub - litb
Oct 28 '11 at 23:20
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Check existence of input argument in a Bash shell script
...X acceptable. [ -z "$1" ] && echo "No argument supplied" I prefer one-liners, as they are easier for me; and it's also faster to check exit value, compared to using if
– J. M. Becker
Jun 2 '12 at 20:38
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makefile:4: *** missing separator. Stop
... the screen, seeing what looked like a tab, totally missing that it is the ONE LINE in the entire file which used spaces instead of a hard tab.
– arinmorf
Feb 1 '15 at 15:44
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Serialize form data to JSON [duplicate]
I want to do some pre-server-validation of a form in a Backbone.js model. To do this I need to get the user input from a form into usable data.
I found three methods to do this:
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