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Replace a value if null or undefined in JavaScript
I have a requirement to apply the ?? C# operator to JavaScript and I don't know how.
Consider this in C#:
5 Answers
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How to run Conda?
I installed Anaconda and can run Python, so I assume that I installed it correctly. Following this introductory documentation , I am trying to install Python v3.3, so I am copying and pasting the following line into my console:
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Why does PHP 5.2+ disallow abstract static class methods?
After enabling strict warnings in PHP 5.2, I saw a load of strict standards warnings from a project that was originally written without strict warnings:
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Get the last inserted row ID (with SQL statement) [duplicate]
...ou haven't inserted another row - it just returns the last IDENTITY value handed out in this scope here.
There are at least two more options - @@IDENTITY and IDENT_CURRENT - read more about how they works and in what way they're different (and might give you unexpected results) in this excellent bl...
remove legend title in ggplot
... all legend titles. For more local control, the guide = guide_legend() command works. To remove the fill legend title, but to keep the color legend title, e.g. scale_fill_brewer(palette = "Dark2", guide = guide_legend(title = NULL)) + scale_color_manual(values = c("blue", "white", "red"))
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How to extract a substring using regex
... modifier, so that for this 'is' my 'data' with quotes it would stop early and return is instead of matching as many characters as possible and return is' my 'data, which is the default behavior.
– Timekiller
Sep 12 '16 at 14:08
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How to revert Master branch to upstream
I have forked a git repository and setup upstream. I've made some changes in Master branch and committed and pushed to github.
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AngularJS: Understanding design pattern
...pps:
Controller
Controller should be just an interlayer between model and view. Try to make it as thin as possible.
It is highly recommended to avoid business logic in controller. It should be moved to model.
Controller may communicate with other controllers using method invocation (possible wh...
Is there a string math evaluator in .NET?
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You could add a reference to Microsoft Script Control Library (COM) and use code like this to evaluate an expression. (Also works for JScript.)
Dim sc As New MSScriptControl.ScriptControl()
sc.Language = "VBScript"
Dim expression As String = "1 + 2 * 7"
Dim result As Double = sc.Eval(expres...
How to make input type= file Should accept only pdf and xls
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You could do so by using the attribute accept and adding allowed mime-types to it. But not all browsers do respect that attribute and it could easily be removed via some code inspector. So in either case you need to check the file type on the server side (your second que...