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Closed 10 years ago.
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What does the # symbol represent in objective-c?
I see a lot of keywords prefixed with the # symbol in Objective-C. At a high level what does # mean?
The # character doesn't mean anything by itself, except that it is used in front of many Objective-C specific keywords so that they are not confused with regular C identifiers.
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Division without using '/'
(16 answers)
Closed 5 years ago.
I must solve the problem of division inside nested loops in order to allow to Intel Compiler vectorization (using C / C++)
My question was concentrated about the vectorization issue, and not about the essence of the division.
Please read carefully, before categorizing the question.
Nor common search on the internet, nor Intel guides can give a concrete solution to that problem
My former question was formulated like this:
'How To Divide two float numbers without using the operator '/'. The result should be the float. '
Thanks
For the sake of homework as a brainbuilding exercise...try to abstract what division really is.
Try to create a method that will subtract variable a from variable b and increment variable c until it cannot subtract anymore and then for the remainder you could do the same on 1/10 of variable a to create decimal values until you reach the desired precision.
Var a=divisor
Var b=divided number
Var c=number of times a goes into b
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SQL Fuzzy Matching
(1 answer)
Closed 6 years ago.
attempting to match a list of names that are similar in one very long column to another that are close but often vary do to missing letters and punctuation? is there a simple solution via a macro and/or sql?
using Levenstein functions can help
check the function and algorithm here: Levenshtein distance in T-SQL
after you create a function - compare the distance, for example:
select ..... from....
where dbo.Levenstein(str1,str2)>0.9 --means, the match between str1 and str2 is 90%
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Ruby function to remove all white spaces?
(25 answers)
Closed 6 years ago.
I have a location model with an attribute name.
I want to trim(remove extra white spaces) the entire name attribute.
I tried to run
Location.TRIM(name)
But it isnt working. is the query wrong?
This is what you are looking for:
Location.update_all('name = TRIM(name)')
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What is your alternative name for ID variable in Objective-C?
(6 answers)
Closed 9 years ago.
I am making some improvements in project made by my predecessors on current job. I found property id in NSManagedObject class as shown below:
Also Xcode highlights this property name as id type. Can this cause some problems in future? I mean, does system smart enough to understand that this is a property name? Do I need to rename it through refactor or just let it stay as is?
id is a reserved word in objective-c, do not use any reserved words as property names on an object.
Don't use id in your model prefer uid for example even if the compiler can distinguish the difference it is not a good practice.
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Closed 10 years ago.
Possible Duplicate:
Split Function equivalent in tsql?
I have a column that contains data in the form:
CustomerZip::12345||AccountId::1111111||s_Is_Advertiser::True||ManagedBy::3000||CustomerID::5555555||
Does SQL have any sort of built in function to easily parse out this data, or will I have to build my own complicated mess of patindex/substring functions to pull each value into its own field?
I don't believe there is anything built in. Look at the comments posted against your original question.
If this is something you're going to need on a regular basis, consider writing a view.