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What does this square bracket and parenthesis bracket notation mean [first1,last1)?
...rent offset depending on which field are you in:
Mathematics tends to be one-based.
Certain programming languages tends to be zero-based, such as C, C++, Javascript, Python, while other languages such as Mathematica, Fortran, Pascal are one-based.
These differences can lead to subtle fence pos...
How do I parse JSON with Objective-C?
I am new to iPhone. Can anyone tell me the steps to follow to parse this data and get the activity details, first name, and last name?
...
Correct way to close nested streams and writers in Java [duplicate]
...... do something with bufferedReader
// if you need more than one reader or writer
FileWriter fileWriter =
autoClose(fileWriter = new FileWriter("someOtherFile"));
BufferedWriter bufferedWriter =
autoClose(bufferedWriter ...
How do you append an int to a string in C++? [duplicate]
...l kinds of objects to strings is through string streams. If you don't have one handy, just create one.
#include <sstream>
std::ostringstream oss;
oss << text << i;
std::cout << oss.str();
Alternatively, you can just convert the integer and append it to the string.
oss &l...
Null vs. False vs. 0 in PHP
...uninitialized variable". Nothing plus 1 is 1, while an unknown value plus one is an unknown value. Just remember that any operator applied to null will (should) result in null, because any operation on an "unknown value" results in an unknown value.
– Eli
Oct...
How to draw circle in html page?
...ve to create a rectangle with rounded corners (via border-radius) that are one-half the width/height of the circle you want to make.
#circle {
width: 50px;
height: 50px;
-webkit-border-radius: 25px;
-moz-border-radius: 25px;
border-radius: 25px;
bac...
Include headers when using SELECT INTO OUTFILE?
...
This is one of the reasons why I'm considering switching to another DBMS.
– e18r
Jul 13 '16 at 0:34
...
How to check if a value exists in an array in Ruby
...
Note that if you have many values in your array, they will all be checked one after the other (i.e. O(n)), while that lookup for a hash will be constant time (i.e O(1)). So if you array is constant, for example, it is a good idea to use a Set instead. E.g:
require 'set'
ALLOWED_METHODS = Set[:to_s...
How can I make SQL case sensitive string comparison on MySQL?
...that start with A or a. To make this search case sensitive, make sure that one of the operands has a case sensitive or binary collation. For example, if you are comparing a column and a string that both have the latin1 character set, you can use the COLLATE operator to cause either operand to have t...
How to get a random value from dictionary in python
...
One way would be:
import random
d = {'VENEZUELA':'CARACAS', 'CANADA':'OTTAWA'}
random.choice(list(d.values()))
EDIT: The question was changed a couple years after the original post, and now asks for a pair, rather than a ...