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Can an enum class be converted to the underlying type?
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I think you can use std::underlying_type to know the underlying type, and then use cast:
#include <type_traits> //for std::underlying_type
typedef std::underlying_type<my_fields>::type utype;
utype a = static_cast<utype...
Convert Go map to json
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If you had caught the error, you would have seen this:
jsonString, err := json.Marshal(datas)
fmt.Println(err)
// [] json: unsupported type: map[int]main.Foo
The thing is you cannot use integers as keys in JSON; it is forbidden. Ins...
How to copy a local Git branch to a remote repo
...y needed to create a new branch or tag in the remote repository when the local name and the remote name are different; otherwise, the ref name on its own will work.
Or, like mentioned in git tip, you can set up a "Branch’s Default Remote":
You can use git config to assign a default remote to a gi...
Linux bash: Multiple variable assignment
...as using this technique to return multiple values from a script that I did care about the return status. I thought I would share my findings.
– Lee Netherton
Oct 22 '15 at 11:26
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multiple definition of template specialization when using different objects
... Hmmm I am still a bit confused about how it breaks the ODR. Because you only define the fully specialized template once. You may be creating the object multiple times in different object files (ie. in this case it is instantiated in other.c and main.c) but the original object itself is ...
Where to define custom error types in Ruby and/or Rails?
... defining custom error types in a Ruby library (gem) or Ruby on Rails application? Specifically:
5 Answers
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See what process is using a file in Mac OS X
...see which process is touching that file. Is that possible? I know that I can see the list of open processes in activity monitor but I think it's happening to quickly for me to see it. The reason for this is I'm using a framework and I think the system version of the framework is being used instea...
Convert data.frame column format from character to factor
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Hi welcome to the world of R.
mtcars #look at this built in data set
str(mtcars) #allows you to see the classes of the variables (all numeric)
#one approach it to index with the $ sign and the as.factor function
mtcars$am <- as.factor(mtcars$am)
#anoth...
mkdir's “-p” option
So this doesn't seem like a terribly complicated question I have, but it's one I can't find the answer to. I'm confused about what the -p option does in Unix. I used it for a lab assignment while creating a subdirectory and then another subdirectory within that one. It looked like this:
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Java Persistence / JPA: @Column vs @Basic
What is the difference between @Column and @Basic annotations in JPA? Can they be used together? Should they be used together? Or does one of them suffice?
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