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hy
im making an app to help students study better but im having trouble. the app let you make notes between other things,but I need a code that can recognize specific characters in a text for example the user writes in a note "Dolphins : are cetacean mammals closely..." i need the app to recognize the character : and also the part thats on the left it needs to be save to use later, as a variable and the part of the right also but as a different variable so I can use them later.
if you can get me the code for that it be great but if possible i preferred a tutorial :)
(the app is for iPhone im using Xcode 5)
Something like:
NSArray *stringArray = [yourNSString componentsSeparatedByString:#":"];
NSString *leftString = stringArray[0];
NSString *rightString = stringArray[1];
EDIT: Just make sure string has the ":" character.
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I looked all the similar questions on the web but nothing turned useful to me. I have a string which I receive from server i.e.
'Justin Timberlake - Can't Stop the Feeling'
It has single quotes in it. Before passing it to NSPredicates, it gets changed to
"text = \'\'Justin Timberlake - Can\'t Stop the Feeling\'\'"
I tried everything, i.e. replacing single quote with \' etc. But nothing helped. What else should I do.
The problem is that the string you get from the server has a single quote already in it ("Can't"). To make it work in a predicate you need to use substitution:
let predicate = NSPredicate(format: "text = %#", "Justin Timberlake - Can't Stop the Feeling")
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I am trying to display product details using javascript. I am using haml and RoR-4.2.1. I have the following code
var a = new Array();
#{#productlist.map do |prdct|
<<-EOS
var t = new Object();
t.product_id = '#{prdct.product_id}';
t.name = '#{prdct.name}';
t.address = '#{prdct.address}';
a.push(t)
EOS
end.join("\n")}
I have a model images which contains the images for the products. A product may or may not have images. So to display images I have added the following
t.shop_image =
"#{if prdct.images.present?
prdct.images.first.image_url
else
''
}"
statements before push statement. But it is generating an issue. How can I add if checking in the heredocs.
Approach 1: do the same thing you'd do with "normal" strings.
"#{product.images.present? ? product.images.first.image_url : ''}"
Approach 1+: extract the expression above into a variable, so that your template contains less logic.
Approach 2: don't abuse heredocs and use ERB instead.
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I have a JSON "string" (if that makes sense), which I am trying to bind to a table but it is not showing the items.
Here is a JS Fiddle showing what I mean.
http://jsbin.com/ziboh/17/edit
Is the reason for it not working because it is a JSON String and not a true JSON object.
JSONModel works with JSON data. If your data is in a string format you can use JSON.parse(your data text) but if possible try to keep your data in JSON format.
Please see http://jsbin.com/nuhijemape/2/edit
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How can I play 20 wma files on delphi using Tmediaplayer, one after another in a continues loop until the program is closed ? I already tried using a timer for each file , but I keep failing. I have 20 songs that I'd like to play in the background while the rest of the program runs.
Put the filenames into a list. Set the TMediaPlayer.FileName property to the first filename in the list, set the TMediaPlayer.Notify property to true, and call TMediaPlayer.Play(). When the TMediaPlayer.OnNotify event signals playback has finished, you can assign the next filename in the list to TMediaPlayer.FileName, reset TMediaPlayer.Notify to true, and call TMediaPlayer.Play(). Repeat for each filename in the list. One you have played the last filename, start over with the first filename.
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x = {"utf8"=>"✓",
"authenticity_token"=>"xxxxxxxxxxxxx=",
"file"=>#>,
"unit_id"=>"00001"}
I have ruby data structure like this and um trying to get the value of #original_filename field
I tried something like this
x["#original_filename"]
and
x[:original_filename]
But both has thrown me an error . How to access that specified element value?
looks like you're trying to upload a file; from your tiny screenshot maybe you're referring to params[:file].original_filename?
The parameter ["file"] is a ActionDispatch::Http::UploadedFile, which has the original_filename member variable, as you can see in the params displayed in your image or here:
http://api.rubyonrails.org/classes/ActionDispatch/Http/UploadedFile.html
So, the way to get this value would be x["file"].original_filename