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Android Studio marks R in red with error message “cannot resolve symbol R”, but build succeeds
In every project I've tried to create in Android Studio, all usages of R are marked in red with the error message "cannot resolve symbol R", but the compilation succeeds and the application runs. This is really annoying, as it blocks auto-completion and shows huge red waved lines all over my code.
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Select data from date range between two dates
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As you can see, there are two ways to get things done:
enlist all acceptable options
exclude all wrong options
Obviously, second way is much more simple (only two cases against four).
Your SQL will look like:
SELECT * FROM Product_sales
WHERE NOT (From_date > @RangeTill OR To_d...
Visual Studio move project to a different folder
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That's what I did, but I thought there is a way to do all that without removing the whole project, which makes me then re-add all the dependencies.
– Egor Pavlikhin
Apr 12 '10 at 21:48
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How do I clone a specific Git branch? [duplicate]
... is: by invoking git clone --branch <branchname> url you're fetching all the branches and checking out one. That may, for instance, mean that your repository has a 5kB documentation or wiki branch and 5GB data branch. And whenever you want to edit your frontpage, you may end up cloning 5GB of ...
What is the difference between IEqualityComparer and IEquatable?
...ted) IEqualityComparer<T> is an interface for an object (which is usually a lightweight class different from T) that provides comparison functions that operates on T
– rwong
Feb 22 at 16:40
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What is the difference between JVM, JDK, JRE & OpenJDK?
...hat contain the bytecodes understood by the JVM. It's also the entity that allows Java to be a "portable language" (write once, run anywhere). Indeed, there are specific implementations of the JVM for different systems (Windows, Linux, macOS, see the Wikipedia list), the aim is that with the same by...
How can I remove an element from a list?
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I don't know R at all, but a bit of creative googling led me here: http://tolstoy.newcastle.edu.au/R/help/05/04/1919.html
The key quote from there:
I do not find explicit documentation for R on how to remove elements from lists, but trial...
Installing SetupTools on 64-bit Windows
I'm running Python 2.7 on Windows 7 64-bit, and when I run the installer for setuptools it tells me that Python 2.7 is not installed. The specific error message is:
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Execute combine multiple Linux commands in one line
...rm *.jar && svn co path to repo && mvn compile package install
If one of the commands fails, then all other commands following it won't be executed.
If you want to execute all commands regardless of whether the previous ones failed or not, separate them with semicolons:
cd /my_fo...
Gson - convert from Json to a typed ArrayList
... convert a JSON string to an ArrayList of a custom class JsonLog ? Basically, JsonLog is an interface implemented by different kinds of logs made by my Android app--SMS logs, call logs, data logs--and this ArrayList is a collection of all of them. I keep getting an error in line 6.
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