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When is each sorting algorithm used? [closed]
...al keys.
Recommendations:
Quick sort: When you don't need a stable sort and average case performance matters more than worst case performance. A quick sort is O(N log N) on average, O(N^2) in the worst case. A good implementation uses O(log N) auxiliary storage in the form of stack space for re...
How do I make a reference to a figure in markdown using pandoc?
I'm currently writing a document in markdown and I'd like to make a reference to an image from my text.
6 Answers
...
JavaScript, Node.js: is Array.forEach asynchronous?
...k at the specification of the algorithm.
However a maybe easier to understand implementation is given on MDN:
if (!Array.prototype.forEach)
{
Array.prototype.forEach = function(fun /*, thisp */)
{
"use strict";
if (this === void 0 || this === null)
throw new TypeError();
va...
How do I check for null values in JavaScript?
... !user){
Which will check for empty strings (""), null, undefined, false and the numbers 0 and NaN
Please note that if you are specifically checking for numbers it is a common mistake to miss 0 with this method, and num !== 0 is preferred (or num !== -1 or ~num (hacky code that also checks agains...
Passing variable number of arguments around
...
To pass the ellipses on, you have to convert them to a va_list and use that va_list in your second function. Specifically;
void format_string(char *fmt,va_list argptr, char *formatted_string);
void debug_print(int dbg_lvl, char *fmt, ...)
{
char formatted_string[MAX_FMT_SIZE];
...
Printing hexadecimal characters in C
... case), your chars are being promoted to int via sign-extension.
Since c0 and 80 have a leading 1-bit (and are negative as an 8-bit integer), they are being sign-extended while the others in your sample don't.
char int
c0 -> ffffffc0
80 -> ffffff80
61 -> 00000061
Here's a solution:
...
Alternate output format for psql
...
I just needed to spend more time staring at the documentation. This command:
\x on
will do exactly what I wanted. Here is some sample output:
select * from dda where u_id=24 and dda_is_deleted='f';
-[ RECORD 1 ]------+--------------------------------------------------------------------------...
How to make a background 20% transparent on Android
...alpha channel. For example, for red use #CCFF0000:
<TextView
...
android:background="#CCFF0000" />
In the example, CC is the hexadecimal number for 255 * 0.8 = 204. Note that the first two hexadecimal digits are for the alpha channel. The format is #AARRGGBB, where AA is the alpha cha...
Convert a Map to a POJO
... looking at Jackson, but is seems I would have to convert the Map to JSON, and then the resulting JSON to the POJO.
8 Answ...
Best practice? - Array/Dictionary as a Core Data Entity Attribute [closed]
... I have noticed that collection types are not available as attribute types and would like to know what the most efficient way is of storing array/dictionary type data as an attribute (e.g. the elements that make up an address like street, city, etc. does not require a separate entity and is more con...