I'm a beginner in html and new to coding as a whole -- I'm currently taking a class and I've been okay up to this point, but I'm having trouble with this specific assignment. We're supposed to create a program that can tell you how many integers are in a string. The user should be asked to input some numbers, for example "123123123", to which the output would tell the user "There are three 3s", essentially. I'm lost so anything helps!
It look like you have to break it to char array and then
Do sorting using for loop just like take distinct value from that and make temp array and return the temp array length
Related
Say I have multiple tables in {game} like {bullets}, where {bullets} has multiple tables as found below. How would I iterate through and call all the update functions contained in {game}?
--Below is a simplified example, Assume each table in {bullets} has multiple entries not just update. And that the final code must work in cases like game={bullets,coins,whatever}, each entry being of similar nature to bullets.
game={}
game.bullets={{update=function(self) end,...}, {update=function(self) end,...},...}
for obj in all(game) do
for things in all(obj) do
things:update() end end
--I'm not sure what I"m doing wrong and whether I even need a double for-loop.
--if bullets wasn't embedded in {game} it would just be:
for obj in all(bullets) do
obj:update()
end
I've also tried:
for obj in all(game.bullets) do
obj:update()
end
*correction: this works, the problem I want solved though is to make this work if I have multiple tables like {bullets} in {game}. Thus the first attempt at double iterations which failed. So rather than repeat the above as many times as I have items in {game}, I want to type a single statement.
all() isn't a standard function in Lua. Is that a helper function you found somewhere?
Hard to tell without seeing more examples, or documentation showing how it's used, with expected return values. Seems to be an iterator, similar in nature to pairs(). Possibly something like this:
for key, value in pairs( game ) do
for obj in all( value ) do
obj :update()
end
end
Sorry, but uhrm, I'd like to use regexp (actually I'd use something else but I want to do the task within a Matlab function) to pick a single row containing desired keywords within an html table.
I am using Matlab calling function regexpi (case-insensitive version of regexp), which is akin to PHP regex from what I can tell.
Ok, here's a snippet from such an html table to parse:
<tr><td>blu</td><td>value</td></tr><tr><td>findme</td><td>value</td></tr><tr><td>ble</td><td>value</td></tr>
The desired row to pick contains the word "findme".
(added:) Content of other cells and tags in the table could be anything (here "bla" is a dummy value)- the important part is the presence of "findme" and that a single line (not more) is caught (or all lines containing "findme" but such behaviour is not expected). Any paired name/value table in a wikipedia page is a good example.
I tinkered with https://regex101.com/ using whatever I could dig up at the Matlab documentation (forward/backward looking, combinations of :,> and ?), but have failed to identify a pattern that will pick just the right row (or all those that contain the keyword "findme"). The following pattern for instance will pick the text but not the entire row: <tr[^>]*>[^>]*.*?(findme).*?<\/td .
Pattern <tr[^>]*>(.*?findme.*?)<\/tr[^>]*> picks the row but is too greedy and picks preceding rows.
Note that the original task I had set out was to capture entire tables and then parse these, but the Matlab regexp-powered function I found for the task had trouble with nested tables (or I had trouble implementing it for the task).
The question is how to return a row containing desired keywords from an html table, programmatically, within a matlab function (without calling an external program)? Bonus question is how to solve the nested table issue, but maybe that's another question.
I suggest you split up the string with strsplit and use contains for the filtering, which is a lot more readable and maintainable than a regex pattern:
htmlString = ['<tr><td>blu</td><td>value</td></tr><tr><td><a',...
'href="bla">findme</a></td><td>value</td></tr><tr><td><a',...
'href="ble">ble</a></td><td>value</td></tr>'];
keyword = 'findme';
splitStrings = strsplit(htmlString,'<tr>');
desiredRow = ['<tr>' splitStrings{contains(splitStrings,keyword)}]
The output is:
<tr><td>findme</td><td>value</td></tr>
Alternatively you may also combine extractBetween and contains:
allRows = extractBetween(htmlString,'<tr>','</tr>');
desiredRow = ['<tr>' allRows{contains(allRows,keyword)} '</tr>']
If you must use regex:
regexp(htmlString,['<tr><td>[^>]+>' keyword '.*?<\/tr>'],'match')
Try this
%<td>(.*?)%sg
https://regex101.com/r/0Xq0mO/1
I'm super new to R and have a question on how to do something. I listed the things that i got to work so ppl have an idea on what is going on. the thing im having trouble with is in bold.
-I have a data spreadsheet with 2 columns of data (End and CTCF). With the CTCF column having more cells
-I want to to take one value from the "End" column and subtract that value from each individual value in "CTCF" column (so i would have a bunch of products from each calculation)
-I want to then compare those products and find the miniumn absoulute value and the coresponding spot in the CTCF column
-then place that value into a new column ajacent to the corresponding End value.
I wrote a while loop (i know there is probably a WAY easier method) and got the calulation/comparison thing down. I was even able to output the location of the CTCF cell that contains my value of interest see below:
*
*data2<-read.csv("farah.csv")
head(data2)
periph_ctcfs<-list()
temp<-vector(mode="numeric", length = 356)
count<-1
for(i in 1:length(data2$CTCF)) while (count<357)
{
End<-data2$End[count]
periph_ctcfs<-(End-data2$CTCF)
periph_ctcfs<-abs(periph_ctcfs)
periph_ctcfs<-which.min(periph_ctcfs)
print(periph_ctcfs)
temp[]<-data2$CTCF[periph_ctcfs]
count<-count + 1;
}*
The problem is when im trying to produce the new "periph_ctcfs" column, when im trying to insert it into the "temp" vector, the last printed number gets placed within all the cells of the "temp" vector. It feels like that each time the loop goes through its not inserting the retrieved value into "temp". Can anyone help? Thanks ive included a link to a photo (below) so you can get a visual on the layout of the data. Sorry for being a n00b.
For clarity purposes:
I know how to parse json cells in Open refine, but this one is too tricky for me.
I've used an API to extract the calendar of 4730 AirBNB's rooms, identified by their IDs.
Here is an example of one Json file : https://fr.airbnb.com/api/v2/calendar_months?key=d306zoyjsyarp7ifhu67rjxn52tv0t20¤cy=EUR&locale=fr&listing_id=4212133&month=11&year=2016&count=12&_format=with_conditions
For each ID and each day of the year from now until november 2017, i would like to extract the availability of this rooms (true or false) and its price at this day.
I can't figure out how to parse out these informations. I guess that it implies a series of nested forEach, but i can't find the right way to do this with Open Refine.
I've tried, of course,
forEach(value.parseJson().calendar_months, e, e.days)
The result is an array of arrays of dictionnaries that disrupts me.
Any help would be appreciate. If the operation is too difficult in Open Refine, a solution with R (or Python) would also be fine for me.
Rather than just creating your Project as text, and working with GREL to parse out...
The best way is just select the JSON record part that you want to work with using our visual importer wizard for JSON files and XML files (you can even use a URL pointing to a JSON file as in your example). (A video tutorial shows how here: https://www.youtube.com/watch?v=vUxdB-nl0Bw )
Select the JSON part that contains your records that you want to parse and work with (this can be any repeating part, just select one of them and OpenRefine will extract all the rest)
Limit the amount of data rows that you want to load in during creation, or leave default of all rows.
Click Create Project and now your in Rows mode. However if you think that Records mode might be better suited for context, just import the project again as JSON and then select the next outside area of the content, perhaps a larger array that contains a key field, etc. In the example, the key field would probably be the Date, and why I highlight the whole record for a given date. This way OpenRefine will have Keys for each record and Records mode lets you work with them better than Row mode.
Feel free to take this example and make it better and even more helpful for all , add it to our Wiki section on How to Use
I think you are on the right track. The output of:
forEach(value.parseJson().calendar_months, e, e.days)
is hard to read because OpenRefine and JSON both use square brackets to indicate arrays. What you are getting from this expression is an OR array containing twelve items (one for each month of the year). The items in the OR array are JSON - each one an array of days in the month.
To keep the steps manageable I'd suggest tackling it like this:
First use
forEach(value.parseJson().calendar_months,m,m.days).join("|")
You have to use 'join' because OR can't store OR arrays directly in a cell - it has to be a string.
Then use "Edit Cells->Split multi-valued cells" - this will get you 12 rows per ID, each containing a JSON expression. Now for each ID you have 12 rows in OR
Then use:
forEach(value.parseJson(),d,d).join("|")
This splits the JSON down into the individual days
Then use "Edit Cells->Split multi-valued cells" again to split the details for each day into its own cell.
Using the JSON from example URL above - this gives me 441 rows for the single ID - each contains the JSON describing the availability & price for a single day. At this point you can use the 'fill down' function on the ID column to fill in the ID for each of the rows.
You've now got some pretty easy JSON in each cell - so you can extract availability using
value.parseJson().available
etc.
I have a HTML multiple select being used which caused no issue until a selection with a comma was entered. When saving / loading the values are split by ',' into a list. Therefore causing an issue
I have tried to find a way of possibly changing the character that is being used to split the values when the form is posted but came to a dead end.
Would be very grateful if someone has any insight into this.
Thanks in advance.
---Update with Code---
The control is created dynamically
Dim SelectName1 As New HtmlSelect
SelectName1.ID = "SelectName" & id
SelectName1.Name = "SelectName"
SelectName1.Multiple = True
and filled by looping though the values.
For Each value As String In Request.Form(idToFind).Split(",")
If Not IsDBNull(SelectName.Items.FindByValue(value)) Then....
I cannot add any more code than that, Apologies
After updating the question by add code, I think the available options are limited:
Create an extra Javascript method, that stores the selected values in a json object and store it into a hidden input field. I'm not an expert in asp.net, though I'm sure there exists a method to parse json objects from a string.
Create an extra javascript method, that concatinating all values to a String and store it into a hidden input field. With creation of a single string, you can define your own delimiter.
After that, add this extra Javascript mehod to the event onSubmit. Then submit the form and read the value from hidden input field.
P.S. In my eyes the second idea is more simple to create, than the first one. And maybe there are better ways.