Hi all,
If I have an array with multiple entries that are the same. How can I split
them up into separate arrays by this criteria?
var myArry =
("cars","cars","cars","cars","sticks","sticks","st icks","trees","trees");
The desired result would separate this array into 3 arrays. The result being
a multidimensional array would be fine.
myNewArry =
[["cars","cars","cars","cars"],["sticks","sticks","sticks"],["trees","trees"]];
David 4 1275
On Jun 14, 5:08 pm, "David" <n...@none.netwrote:
Hi all,
If I have an array with multiple entries that are the same. How can I split
them up into separate arrays by this criteria?
var myArry =
("cars","cars","cars","cars","sticks","sticks","st icks","trees","trees");
The desired result would separate this array into 3 arrays. The result being
a multidimensional array would be fine.
myNewArry =
[["cars","cars","cars","cars"],["sticks","sticks","sticks"],["trees","trees"]];
David
var
// s = myArry.join(","), // or ...
s = "cars,cars,cars,cars,sticks,sticks,sticks,trees,tr ees",
res = []
;
s.replace( /(\w+)(,\1)*/g,
function ( a ) {
res.push( a.split( "," ) );
} );
alert( res.join( "\n" ) );
--
../rh
<ro********@gmail.comwrote in message:
var
// s = myArry.join(","), // or ...
s = "cars,cars,cars,cars,sticks,sticks,sticks,trees,tr ees",
res = []
;
s.replace( /(\w+)(,\1)*/g,
function ( a ) {
res.push( a.split( "," ) );
} );
alert( res.join( "\n" ) );
------------------------------------------
Ron,
That's brilliant. Thank you. You know as simple as this is I don't
understand it, but am trying.
Delimit the array entries with a comma.
replace any (set of characters) (comma and a 1)
Why is there a 1 ( a numeral ) in this? The array contains no numerals.
Then replace that with what the function(a){} returns. Where is a defined?
It works and is very elegant but, lol, I would love to know why. You should
see the mess I had :-)
David
On Jun 14, 10:05 pm, "David" <n...@none.netwrote:
>><ron.h.h...@gmail.comwrote in message:
var // s = myArry.join(","), // or ... s = "cars,cars,cars,cars,sticks,sticks,sticks,trees,tr ees", res = [] ; s.replace( /(\w+)(,\1)*/g, function ( a ) { res.push( a.split( "," ) ); } ); alert( res.join( "\n" ) );
------------------------------------------
Ron,
That's brilliant. Thank you. You know as simple as this is I don't
understand it, but am trying.
Delimit the array entries with a comma.
replace any (set of characters) (comma and a 1)
Why is there a 1 ( a numeral ) in this? The array contains no numerals.
The \(digit) is related to the [now deprecated] RegExp.$(digit). \
(digit) makes reference to the captured text match in the (1st \1, 2nd
\2, ...) set of capturing parentheses as specified by the digit. The
difference is that \(digit) can be used during the matching process to
specify text that is to be matched.
Then replace that with what the function(a){} returns. Where is a defined?
As given, the function returns a value that is undefined. But, because
the generated replacement is not assigned, it's not relevant and is
discarded. So the .replace is just a mechanism to provide the function
calls with the appropriate values as the matching operations progress.
"a" is provided with its value by the caller, the regular expression
matching process, and provides the text string that is currently
matched on each successive call.
It works and is very elegant but, lol, I would love to know why. You should
see the mess I had :-)
Some other time, perhaps. ;-)
Note there are other ways to get the desired result in Javascript with
a looping construct, that should be reasonably clean and short.
--
../rh
>>><ron.h.h...@gmail.comwrote in message:
>Ron,
That's brilliant. Thank you. You know as simple as this is I don't understand it, but am trying.
Delimit the array entries with a comma. replace any (set of characters) (comma and a 1)
Why is there a 1 ( a numeral ) in this? The array contains no numerals.
The \(digit) is related to the [now deprecated] RegExp.$(digit). \
(digit) makes reference to the captured text match in the (1st \1, 2nd
\2, ...) set of capturing parentheses as specified by the digit. The
difference is that \(digit) can be used during the matching process to
specify text that is to be matched.
>Then replace that with what the function(a){} returns. Where is a defined?
As given, the function returns a value that is undefined. But, because
the generated replacement is not assigned, it's not relevant and is
discarded. So the .replace is just a mechanism to provide the function
calls with the appropriate values as the matching operations progress.
"a" is provided with its value by the caller, the regular expression
matching process, and provides the text string that is currently
matched on each successive call.
>It works and is very elegant but, lol, I would love to know why. You should see the mess I had :-)
Some other time, perhaps. ;-)
Note there are other ways to get the desired result in Javascript with
a looping construct, that should be reasonably clean and short.
I think I'll stay with this method, as it facinates me. Thanks for the
explanation.
David This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
by: point |
last post by:
Hi there..
I have the folowing array
=> property = hexonet
=> property = 2003-12-01 18:46:20.0
=> property = hexonet
=> property = 2003-12-02 02:59:15.0
=> property = hexonet
=>...
|
by: Antti Nummiaho |
last post by:
Consider the following javascript:
var temp = new Array(new Array(0))
document.writeln(temp)
temp = new Array(new Array(0,1))
document.writeln(temp)
One would assume that it would print "0...
|
by: Gactimus |
last post by:
I made the program below. It outputs the smallest number in the array. What
I would like to know is how do I output the array location. I am at a loss.
For example, since the smallest number in...
|
by: ritchie |
last post by:
Hi all,
I am new to this group and I have question that you may be able to
help me with.
I am trying to learn C but am currently stuck on this.
First of all, I have a function for each sort...
|
by: ritchie |
last post by:
Hi,
I am writing to ask if anyone can see why my array is not being sorted
correctly?
It's an array of 4 elements(ints 1,2,3,4) but after calling the
selection sort
it comes back sorted as...
|
by: intrepid_dw |
last post by:
Hello, all.
I've created a C# dll that contains, among other things, two functions
dealing with byte arrays. The first is a function that returns a byte
array, and the other is intended to...
|
by: George |
last post by:
Sub ExcelToListBox()
Dim xRange As Object
Dim ary
Dim xValue As String
xRange = oXL.Range("A1:A9") 'has letters A-H
ary = xRange.value
xValue = ary(3, 1) 'xValue = C...
|
by: inkexit |
last post by:
I need help figuring out what is wrong with my code. I posted here a
few weeks ago with some code about creating self similar melodies in
music. The coding style I'm being taught is apparently a...
|
by: sandy |
last post by:
I need (okay, I want) to make a dynamic array of my class 'Directory',
within my class Directory (Can you already smell disaster?)
Each Directory can have subdirectories so I thought to put these...
|
by: fluk |
last post by:
Hi Guys, I hope someone can help me with this, because i'm getting
crazy to find a good way to do that!
This is what I got by querying a db.
$arr1 = array("site", "description", "area1" ,...
|
by: taylorcarr |
last post by:
A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...
|
by: aa123db |
last post by:
Variable and constants
Use var or let for variables and const fror constants.
Var foo ='bar';
Let foo ='bar';const baz ='bar';
Functions
function $name$ ($parameters$) {
}
...
|
by: ryjfgjl |
last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
|
by: ryjfgjl |
last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
|
by: BarryA |
last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
|
by: nemocccc |
last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
|
by: Hystou |
last post by:
There are some requirements for setting up RAID:
1. The motherboard and BIOS support RAID configuration.
2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
| |