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Objective-C - Remove last character from string
... the morning for arithmetic I guess. :) Omar, string refers to a variable called string that holds the text you want to modify. You can take a look at the documentation for the different ways you can create an NSString object, either from a file on disk or from data in your application.
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Does order of where clauses matter in SQL?
Let's say I have a table called PEOPLE having 3 columns ID, LastName, FirstName , none of these columns are indexed.
LastName is more unique, and FirstName is less unique.
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is it possible to update UIButton title/text programmatically?
... to update the title/text of the UIButton to reflect the new state. I'm calling:
12 Answers
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In Go's http package, how do I get the query string on a POST request?
...value pair in the request body. You're correct in your answer that you can call ParseForm() and then use req.Form field to get the map of key-value pairs, but you can also call FormValue(key) to get the value of a specific key. This calls ParseForm() if required, and gets values regardless of how th...
Reason to Pass a Pointer by Reference in C++?
...er by reference. For instance, if you have a class holding data in a dynamically allocated array, but you want to provide (nonconstant) access to this data to the client. At the same time, you do not want the client to be able to manipulate the memory through the pointer.
– use...
Remove spaces from std::string in C++
...around and returns a pointer to where the end now should be. So we have to call string::erase to actually modify the length of the container:
str.erase(remove_if(str.begin(), str.end(), isspace), str.end());
We should also note that remove_if will make at most one copy of the data. Here is a samp...
How to get the difference between two arrays of objects in JavaScript
...bjects are equal. Like all functions that return true or false, it can be called a "predicate function", but that's just terminology. The main point is that makeSymmDiffFunc is configured with a function that accepts two objects and returns true if we consider them equal, false if we don't.
Using...
Difference between e.target and e.currentTarget
...E_OVER, onOver);
// btns = the thing before the dot of an addEventListener call
function onOver(e:MouseEvent):void{
trace(e.target.name, e.currentTarget.name);
}
e.target will be one of the 10 buttons and e.currentTarget will always be the "btns" clip.
It's worth noting that if you changed the ...
How to check if smtp is working from commandline (Linux) [closed]
I have a SMTP-server, for the purpose of this question lets call it: smtp.mydomain.com.
4 Answers
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Django - how to create a file and save it to a model's FileField?
...ld and FieldFile in the Django docs, and especially FieldFile.save().
Basically, a field declared as a FileField, when accessed, gives you an instance of class FieldFile, which gives you several methods to interact with the underlying file. So, what you need to do is:
self.license_file.save(new_na...