I want one sentence in NSString object like this:
NSString *myWords = #"Hi,I'm Janatan! I love objective C!!!";
I want split this sentence to more part for example :
first part : Hi
second part : I'm Janatan
third part : I love objective C
I want do this with loop but I don't know how to do it. I want split words until arrive to signs (! , ? . and etc)
please guide me about that.
You can do it with the componentsSeparatedByCharactersInSet, e.g.:
NSString *myWords = #"Hi,I'm Janatan! I love objective C!!!";
NSArray *arr = [str componentsSeparatedByCharactersInSet:
[NSCharacterSet characterSetWithCharactersInString:#"!,"]];
Related
Suppose I have two NSMutableString like this:-
String 1 ----- {aaa,bss,cdd,dff,eee,fgh}
String 2 ----- {aaa,bss,cdd}
How can we find the the difference between String 1 & String 2 in an NSArray:-
Like this:- { dff,eee,fgh }
As mentioned in duplicate question it is different.
Put both these strings in two different NSMutableSets and then subtract 2nd from 1st.
You will have your result.
NSString* str1 = #"aaa,bss,cdd,dff,eee,fgh";
NSString* str2 = #"aaa,bss,cdd";
NSMutableSet *set1 = [NSMutableSet setWithArray:[str1 componentsSeparatedByString:#","]];
NSMutableSet *set2 = [NSMutableSet setWithArray:[str2 componentsSeparatedByString:#","]];
[set1 minusSet:set2];
NSLog(#"result %#",[set1 allObjects]);
Try with NSMutableArray to remove same objects.
For Eg.
NSString *s1 = #"aaa,bss,cdd,dff,eee,fgh";
NSString *s2 = #"aaa,bss,cdd";
NSArray *arr1 = [s1 componentsSeparatedByString:#","];
NSArray *arr2 = [s2 componentsSeparatedByString:#","];
NSMutableArray *resArray = [NSMutableArray arrayWithArray:arr1];
[resArray removeObjectsInArray:arr2];
NSString *res = [resArray componentsJoinedByString:#","];
NSLog(#"Result :: %#", res);
Hopefully, it'll help you.
Thanks.
First part of the problem is to separate each string into substrings separated by the commas.
To create the substrings you can use
[string substringFromIndex:index] - to get an NSString from that index foward
[string substringToIndex:index] - to get an NSString from the begining to that index
Or you could combine it into
[string substringWithRange:NSMakeRange(fisrtIndex, secondIndex)] - to get a strin from the first index to the second index
Those are the basic operations. But there are a lot more in this case you could use specifically:
[string componentsSeparatedByString:#","] to get an NSArray with all the substrings. That would have the problem of the '{' and '}' appearing in the first and last component. This can be solved in many ways:
by first trimming the string using the substring methods already explained
by using another method altogether
[string componentsSeparatedByCharactersInSet: [NSCharacterSet characterSetWithCharactersInString:#",{"]] The problem with this method is, because your strings start/end with one of the separators you would get the first/last component an empty string. You can just remove it from the array or ignore it or choose the other method, your choice.
Now that you know how to get the substrings all you need to know is how to compare the two. There are literally many ways to do this. I am just going to name a few. Of course each solution has its own advantages and disadvantages and code complexity.
1 - comparing each substring one by one the the other using isEqualToString:
2 - comparing each substring from one of the original strings with the full second original string by using [string2 rangeOfString:substring].location != NSNotFound
3 - if you have iOS 8 or OS X Yosemite you can use [string2 containsString:substring]
4 - You can transform the arrays of substrings into sets and then compare them as Ankit Srivastava suggested
5 - You can use the removeObjectsInArray to get the substrings that are not common between the two and then use that newly created array to removeObjectsInArray to the original and have just the common...
Really the possibilities are almost endless
I have a string coming from server , i want to show some part of string in a view and rest part of string in other view .
Thanks for help.
i want to get the last word of last line of first view. i have searched ,but nothing seems to help me. If any one can suggest me something i would be glad to him/her.
NSString *fromIndex = [_categoryWiseNews.article substringWithRange:NSMakeRange(0, lastWordOfFirstView)];
i have tried with substringWithRange but with this you have to know the lastWordOfFirstView index number for breaking the string into two parts, for which i have no idea.
I really don't know what it is that you're asking lastWordOfFirstView might make sense to you because it is relevant to the thing you are working on. But to us it means nothing.
You can separate a string into words in an array doing this...
NSString *string = #"Hello world, this is a string";
NSArray *array = [string componentsSeparatedByString:#" "];
// array is now... [#"Hello", #"world,", #"this", #"is", #"a", #"string"];
Then you can get the last word from it...
NSString *lastWord = [array lastObject];
Use this to get the last word from a sentence:
NSString *lastWord = [[fullSentenceString componentsSeparatedByString:#" "] lastObject];
Ok so I am looking for a piece of code that will take text out of label. Before I tell you , I looked all around internet.
Example
Label's text : Hi I am asking for help.
Ok so what I want the program to do is when I hit a button to remove part of the text like this.
From : Hi I am asking for help to Hi I asking for help
deleting the word 'am'.
Don't tell me to do any manual changing like, label.text = #"Hi I asking for help".
Because the value I am trying to change is static and it is an RSS Reader.
Summary :
I want to remove particular text from label, example taking a word out from the middle of the label and re-displaying the new value.
NSString *myString = #"Hi I am asking for help.";
NSString *updated = [myString stringByReplacingOccurrencesOfString:#" am" withString:#""];
NSLog(#"%#",updated);
output will be:- Hi I asking for help.
try this :
- (NSString *)stringByReplacingOccurrencesOfString:(NSString *)target
withString:(NSString *)replacement
...to get a new string with a substring replaced (See NSString documentation for others)
Example:
NSString *str = #"Hi I am asking for help.";
str = [str stringByReplacingOccurrencesOfString:#"am"
withString:#""];
I'm trying to concatenate 2 strings assigning the result to a new string.
Normally I would do this way:
NSString * s = [NSString stringWithFormat: #"%#%#", str1, str2];
Now I wish s to be static
static NSString * s = [NSString stringWithFormat: #"%#%#", str1, str2];
but compiler kick me with "Initializer element is not a compile-time..."
Is there any way to do this? I Googled a bit with no results and also I have not found answers on StackOverflow asking the question.
And what about using a short form like (in PHP)
$s = $str1.$str2;
Any help will be appreciated.
EDIT: What i want to achieve is to have a config file like this (in PHP code)
define ("BASE_URL", "mysite.com/");
define ("SERVICE_URL1", BASE_URL."myservice1.php?param1=value1");
define ("SERVICE_URL2", BASE_URL."myservice2.php?param2=value2");
I prefer to have all configurations strings in 1 file and i found usefull static strings in objective c. Just want to put 2 usefull thing together :)
EDIT2: There's no metter if i obtain this with defines, but the NSString way is preferred and i use static just beacause const make me some compilation problems i haven't solved yet
Use this code for creating static s:
static NSString * s = nil;
if (!s)
s = [NSString stringWithFormat: #"%#%#", str1, str2];
Also for concatenating two string you case use such code: NSString *s = [str1 stringByAppendingString: str2];
UPDATED:
You can concat static string by putting them one by one.
Example:
#define STR1 #"First part" #" Second part"
#define STR2 #"Third part " STR1
NSLog(#"%#", STR2);
This cole will print Third part First part Second part
I think below lines may help:
NSString *str1 = #"String1";
NSString *str2 = #"String2";
NSString *combinedStr = [str1 stringByAppendingString:str2];
If you can use a define, it is pretty simple:
#define A #"a"
#define B #"b"
…
static NSString *ab = A B; // or: #"A" #"B"
You can always concatenate string literals with a single space.
But something very important has to happen to use defines. What's wrong with computing it non-static or compute it once?
BTW: You should use dispatch_once() and not if. For the reasons you can search "dispatch_once" on SO.
If you don't mind compiling Objective-C++ code, you could simply change the extension from .m to .mm, by default XCode compiles according to file type, and this is valid in Objective-C++
Solved this way:
#define kBaseURL #"mysite.com/"
static NSString *kServiceUrl1 = kBaseURL #"myservice1.php?param1=value1";
static NSString *kServiceUrl2 = kBaseURL #"myservice2.php?param2=value2";
thanks all.
now the question is
wich one i have to accept as right answer? I mean, mine is the solution, but I would never have got there without your help guys
I am pulling tweets from Twitter and using this to convert it into an array:
NSArray *feedData = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:&jsonError];
Some of the tweets have a large number of new lines and white space, which has become increasingly annoying for the sake of layout.
I want to turn any strings that have multiple lines into a single lined string.
Here is an example string that I need to convert:
I used #ECSliding library with my project but i can’t used with
#UITableView plz provide me the way if u know it.
#kbegeman
& thank u ;
As you can see this mention has a bunch of white space and couple extra lines.
I have tried using this:
NSString *tweet = [currentTweet objectForKey:#"text"];
NSString *trimmedTweet = [tweet stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
And I also tried this:
myString = [myString stringByReplacingstringByReplacingOccurrencesOfString:#"\n" withString:#""];
myString = [myString stringByReplacingstringByReplacingOccurrencesOfString:#" " withString:#""];
Unfortunately, this does not work. Does it have something to do with the way I am reading in the JSON? Am I using that method wrong? Is there any other solution anyone can think of? Any help would be great, thanks!
That method stringByTrimmingCharactersInSet trims chars from the start and end of the receiver. You'll probably want something like:
NSString *trimmedTweet = [tweet stringByReplacingOccurrencesOfString:#"\n" withString:#" "];