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Timer function to provide time in nano seconds using C++
...ontroversy on the efficacy of QPC under certain circumstances as stated in http://msdn.microsoft.com/en-us/library/windows/desktop/ee417693(v=vs.85).aspx
...While QueryPerformanceCounter and QueryPerformanceFrequency typically adjust for
multiple processors, bugs in the BIOS or drivers may res...
Is there a function to deselect all text using JavaScript?
...ll clear any selection, including within text inputs and textareas:
Demo: http://jsfiddle.net/SLQpM/23/
function clearSelection() {
var sel;
if ( (sel = document.selection) && sel.empty ) {
sel.empty();
} else {
if (window.getSelection) {
window.getS...
What is the use of “ref” for reference-type variables in C#?
...
Very nicely explained here :
http://msdn.microsoft.com/en-us/library/s6938f28.aspx
Abstract from the article:
A variable of a reference type does not contain its data directly; it
contains a reference to its data. When you pass a reference-type
...
How to see indexes for a database or table in MySQL?
...ation_schema.statistics
WHERE table_schema = 'sakila'
GROUP BY 1,2;
Ref: http://blog.9minutesnooze.com/mysql-information-schema-indexes/
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follo...
Rolling or sliding window iterator?
...docs don't have "window" in the itertool examples (i.e., at the bottom of http://docs.python.org/library/itertools.html), here's an snippet based on the
code for grouper which is one of the examples given:
import itertools as it
def window(iterable, size):
shiftedStarts = [it.islice(iterable,...
Effect of a Bitwise Operator on a Boolean in Java
... of boolean type. I'd say for any other case the results are not defined:
http://java.sun.com/docs/books/jls/second_edition/html/expressions.doc.html#5228
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...
Difference between std::result_of and decltype
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Benefit of using Parcelable instead of serializing object
...many benchmarks, beating Kryo, Avro, Protocol Buffers and Jackson (json):
http://code.google.com/p/thrift-protobuf-compare/wiki/Benchmarking
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What is the difference between compare() and compareTo()?
...ve one natural sorting order, you may not need compare().
Summary from http://www.digizol.com/2008/07/java-sorting-comparator-vs-comparable.html
Comparable
A comparable object is capable of comparing itself with another object.
Comparator
A comparator object is capable of comparing two differe...
Create a temporary table in a SELECT statement without a separate CREATE TABLE
... IF NOT EXISTS table2 AS (SELECT * FROM table1)
From the manual found at http://dev.mysql.com/doc/refman/5.7/en/create-table.html
You can use the TEMPORARY keyword when creating a table. A TEMPORARY table is visible only to the current session, and is dropped automatically when the session is ...