i want know if is possible, to get a specific element value of a xml file without use all delegate NSXMLParse method, i know that in OS X is possible with two simple line:
NSXMLDocument *xmlDoc = [[NSXMLDocument alloc] initWithData:connection.data options:0 error:nil];
NSString *time = [[xmlDoc rootElement] stringValueForXPath:#"./Time"];
is possible do the same thing in iOS? with few line?
thanks
XPath exists for iOS, as well. Here is a really great tutorial on using libxml2, XPath, and XML for parsing data.
Coca with Love
With XPath, you're expected to pass in a clip query. For the following, XML, your clip query would be "//day":
<day>
Monday
</day>
<day>
Tuesday
</day>
...
<day>
Friday
</day>
This will give you an array of 5 dictionaries with node_name = day and node_content = the day of the week.
Related
I have google some related questions, but unfortunately didn't find answer.
I have string like 2016-07-22, i need to get an integer 07, evaluate it to 7 and save.
Of course, this is date, therefore it will change every time, so i cant suppose that year always will be 2016. I need to get string after 5th symbol up to 8th.
Is there any easy way to achieve that? Thanks.
If it's always that section of the string, you can use NSMakeRange(5, 2) and substringWithRange to pick out the month.
After you have "07", conversion is just a case of asking the string for its integerValue.
The "save" part depends entirely on where you want to save it.
Here is just one way (I can think of at least 3 other ways):
NSString *str = #"2016-07-22";
NSArray *elements = [str componentsSeparatedByString:#"-"];
NSAssert([elements count] == 3, #"Ahhh!");
NSInteger month = [elements[1] integerValue];
I am trying to use blew expression in Google SpreadSheet.
=min(GoogleFinance("HKDUSD","price",date(A2)-1,date(A2)))
But since A2 data is in mm/dd/year format, we need to convert it to yy,mm,dd format as parameter of date().Does Google SpeadSheet has some API to do such convert?
It actually works if you just add the dates as they are without the date function wrapped around them
=min(GoogleFinance("HKDUSD","price",L1-1,L1))
Edited: To answer your follow up question about the date format - a formulaic workaround you do uses regex replace and basically just swaps the two capture groups in month and day with this regex "(\w+)/(\w+)":
=min(GoogleFinance("HKDUSD","price",REGEXREPLACE(L1,"(\w+)/(\w+)","$2/$1")-1,REGEXREPLACE(L1,"(\w+)/(\w+)","$2/$1")))
While querying data from a database I receive the hours a process is started and ended in two separate string fields for example start = "1100" and end = "+0200" which indicate it's hours of operation are from 11am-2am. What is the proper way to represent this in swift so that I can determine the amount of time left from the current time to the end time of the process.
EDIT:
I found an interesting way using the date formatter if I remove any possible prefix of + and use the below code it seems to work correctly; however, the date is not set is their a work around?
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "HHmm"
let date = dateFormatter.dateFromString("1340")
You can create NSDate from components using NSCalendar.currentCalendar().dateWithEra (there are other similar functions, look up NSCalendar for details). You will need to add some logic to determine if the 2AM is today or tomorrow etc.
Then you can compare two NSDate dates. To determine time left to the end you would probably use NSDate method timeIntervalSinceDate. You can also use NSDateComponentsFormatter to get the remaining time nicely formatted.
I have dates in format e.g.
2014-12-09T11:10:23.0000000-08:00
How To parse this date & get 2014-12-09T11:10:23.
Please Help I have tried with many date formatters in setDateFormat: method.
setDateFormat:#"yyyy-MM-dd'T'HH:mm:ss.SSSSSSSZZZZZ"
(It's all in the spec if you bother to look.)
I have a screen where the user can enter some information. It shows a decimalPad. According to the user locale, I know the decimalPadwill show commaor period, or even something else.
Therefore, my database will contain NSStrings stored from the users, although, some of them will have comma, like 5,4, or period, as in 5.4. The problem is that I need to do some math with these values, and I can't find a pattern to convert them.
Lets say the NSStringhas a comma, as in 5,4. I can easily convert that to a floatusing:
NSNumberFormatter *commas = [NSNumberFormatter new];
commas.numberStyle = NSNumberFormatterDecimalStyle;
NSLocale *commaLocale = [[NSLocale alloc] initWithLocaleIdentifier: #"br_PT"];
commas.locale = commaLocale;
NSString *string = #"5,4";
float testFloat = [[commas numberFromString:string] floatValue];
I correctly get the result 5.4, and can go on with my math calculations. But for instance, if the number was saved by an US user, the NSString would be 5.4, and I wouldn't get the right result using this code. Even if I get user current locale, it doesn't help me, since the user will get values stored all around.
Anyway, I'm a little confused with this. How could I simply create a pattern to deal with this?
I don't want to work with the string, as in stringByReplacingOccurences..., anyway, at least if I can avoid that.
If you want to use the value as a number, you should store the value as a number in your database. NSNumber is a perfect object for that and with your method you can get correct value. When you show the value again to the user you should convert the NSNumber again with NSNumberFormatter. Everything else will be a workaround and have negative impact. Even with stringByReplacingOccurences... you have the risk that somebody uses thousand-dots or commas...