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Function in JavaScript that can be called only once
...e executed only once, in each time after the first it won't be executed. I know from C++ and Java about static variables that can do the work but I would like to know if there is a more elegant way to do this?
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Is there a vim command to relocate a tab?
...o the left: :tabm -i
It's a relatively new feature. So if it doesn't work try updating your vim.
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Is it okay to use now?
I'm working on a mobile phone web app and I have several text fields that could benefit from <input type="tel"/> . iPhones will adjust the keyboard for the user, but I'm worried about breaking backwards compatibility. What I'm hoping is that browsers/phone that support this can assist the use...
Dealing with nginx 400 “The plain HTTP request was sent to HTTPS port” error
...p and https calls. The problem is, when both are defined in the server block https calls are responded to normally but http yields a 400 "The plain HTTP request was sent to HTTPS port" error. This is for a static page so I'm guessing Sinatra has nothing to do with this. Any ideas on how to fix this?...
How to play audio?
I am making a game with HTML5 and JavaScript.
19 Answers
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Warning message: In `…` : invalid factor level, NA generated
...nch" was not a defined level. Use the stringsAsFactors = FALSE flag when making your data frame to force "Type" to be a character.
> fixed <- data.frame("Type" = character(3), "Amount" = numeric(3))
> str(fixed)
'data.frame': 3 obs. of 2 variables:
$ Type : Factor w/ 1 level "": NA 1 ...
How to “return an object” in C++?
I know the title sounds familiar as there are many similar questions, but I'm asking for a different aspect of the problem (I know the difference between having things on the stack and putting them on the heap).
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How to get current time and date in Android
...e are plenty of constants in Calendar for everything you need.
Edit:
Check Calendar class documentation
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Android check internet connection [duplicate]
...an app that uses the internet and I'm trying to create a function that checks if a connection is available and if it isn't, go to an activity that has a retry button and an explanation.
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How can a time function exist in functional programming?
I've to admit that I don't know much about functional programming. I read about it from here and there, and so came to know that in functional programming, a function returns the same output, for same input, no matter how many times the function is called. It's exactly like a mathematical function w...