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What does an exclamation mark mean in the Swift language?
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"forced unwrapping": john! (gives the Person value if it exists, runtime error if it is nil)
"optional binding": if let p = john { println(p) } (executes the println if the value exists)
"optional chaining": john?.learnAboutSwift() (executes this made-up method if the value exists)
I guess you c...
C++ wait for user input [duplicate]
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@herohuyongtao: It gives this error "error C4996: 'getch': The POSIX name for this item is deprecated. Instead, use the ISO C++ conformant name: _getch."
– CreativeMind
Jan 21 '14 at 12:28
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Is there any publicly accessible JSON data source to test with real world data? [closed]
...Removed due to twitter restricting their API with OAUTH requirements...
{"errors": [{"message": "The Twitter REST API v1 is no longer active. Please migrate to API v1.1. https://dev.twitter.com/docs/api/1.1/overview.", "code": 68}]}
Replacing it with a simple example of the Github API - that retu...
What are all codecs and formats supported by FFmpeg?
I need a list of codecs and formats supported by FFmpeg. Where can I find it?
4 Answers
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Saving changes after table edit in SQL Server Management Studio
... saved in SQL Server Management Studio (no data in table present) I get an error message:
7 Answers
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Method has the same erasure as another method in type
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Not the first time I encounter Java error which is no error at all and could be compiled if only the authors of Java used warnings as everybody else does. Only they think they know everything better.
– Tomáš Zato - Reinstate Monica
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Android Studio: Javadoc is empty on hover
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This hover works but can conflict with showing an error on the same line and can be difficult to get get the desired one open. Eclipse did the hovering javadoc and errors so much better!
– Gary Bak
Aug 7 '15 at 18:47
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Selenium c# Webdriver: Wait Until Element is Present
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I still had a lot of errors until I used this line return wait.Until(ExpectedConditions.ElementToBeClickable(by)); and it works great now. Heads up in case anyone else gets random elements not found still.
– prospector
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Show filename and line number in grep output
I am trying to search my rails directory using grep. I am looking for a specific word and I want to grep to print out the file name and line number.
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Getting the first and last day of a month, using a given DateTime object
I want to get the first day and last day of the month where a given date lies in. The date comes from a value in a UI field.
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