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What does LINQ return when the results are empty
I have a question about LINQ query. Normally a query returns a IEnumerable<T> type. If the return is empty, not sure if it is null or not. I am not sure if the following ToList() will throw an exception or just a empty List<string> if nothing found in IEnumerable result?
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#ifdef replacement in the Swift language
...er does not include a preprocessor. Instead, it takes advantage of compile-time attributes, build configurations, and language features to accomplish the same functionality. For this reason, preprocessor directives are not imported in Swift.
I've managed to achieve what I wanted by using custom Bu...
How to return a value from __init__ in Python?
I have a class with an __init__ function.
10 Answers
10
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What's the difference between “ ” and “ ”?
Both of them mean space, but is there any difference?
13 Answers
13
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How to change the remote a branch is tracking?
The central repository had to be set up on a new server, so I created a new remote on my local repo, and pushed to that.
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When should you branch?
...ranches, not individual changesets, which makes you free to commit as many times as you want and doesn't impose a limit like "one checkin per task".
Tasks are independent (normally starting from a stable baseline, so you only focus on your code, not on fixing bugs from your folks), and you can choos...
How do I enable the column selection mode in Eclipse?
News wrote that Eclipse 3.5 finally supports column selection.
Unfortunately I don't know HOW to enable it. I tried pressing the ALT-key like I am used to in Visual Studio and all other Microsoft products but that had no effect.
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Nodemailer with Gmail and NodeJS
I try to use nodemailer to implement a contact form using NodeJS but it works only on local it doesn't work on a remote server...
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How to detect if app is being built for device or simulator in Swift
...lsky's answer.
Original answer
If you need a static check (e.g. not a runtime if/else) you can't detect the simulator directly, but you can detect iOS on a desktop architecture like follows
#if (arch(i386) || arch(x86_64)) && os(iOS)
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#endif
After Swift 4.1 version
Latest u...
get all characters to right of last dash
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This will probably save the most developer time, but in the general case note that code like this will many string allocations (probably four in the example above) so might be deemphasized in performance-critical sections.
– Charles Burns
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