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Debugging with command-line parameters in Visual Studio
I'm developing a C++ command-line application in Visual Studio and need to debug it with command-line arguments. At the moment I just run the generated EXE file with the arguments I need (like this program.exe -file.txt ) , but this way I can't debug. Is there somewhere I can specify the arguments ...
Key existence check in HashMap
...ue. If you definitely don't have null values in the map, just get is fine, and avoids doing two look-ups when you need the value as well.
– Jon Skeet
Apr 11 '18 at 14:33
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Converting BigDecimal to Integer
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You would call myBigDecimal.intValueExact() (or just intValue()) and it will even throw an exception if you would lose information. That returns an int but autoboxing takes care of that.
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How to add a downloaded .box file to Vagrant?
... you can also pass -f to force it to download the box again, and replace it if it already exists. e.g. vagrant box add -f my-box http://some-url
– Brad Parks
Nov 17 '16 at 14:20
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Hover and Active only when not disabled
I use hover , active and disabled to style Buttons.
7 Answers
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Method call if not null in C#
...ke();
or:
obj?.SomeMethod();
The ?. is the null-propagating operator, and will cause the .Invoke() to be short-circuited when the operand is null. The operand is only accessed once, so there is no risk of the "value changes between check and invoke" problem.
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Prior to C# 6, no: there is no...
Difference between two lists
...Using Except is exactly the right way to go. If your type overrides Equals and GetHashCode, or you're only interested in reference type equality (i.e. two references are only "equal" if they refer to the exact same object), you can just use:
var list3 = list1.Except(list2).ToList();
If you need t...
How to simulate a button click using code?
How can I trigger a button click event using code in Android? I want to trigger the button click programmatically when some other event occurs.
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Check if list contains element that contains a string and get that element
...n into similar ones utilizing LINQ but I haven't been able to fully understand them (and thus, implement them), as I'm not familiarized with it. What I would like to, basically, is this:
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How to test my servlet using JUnit
I have created a web system using Java Servlets and now want to make JUnit testing. My dataManager is just a basic piece of code that submits it to the database. How would you test a Servlet with JUnit?
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