casting - dcast in R - creating pivot table - Stack Overflow The hack is to just spread by remaining Student and Score the same and then spread other variables (in this case Assessor) and the with [-2] remove the Score column in order to get the desired output (unless your first column is made by column names actually, which is impossible in base R; in that case you need a data table solution)
mysql - SELECT LIMIT 1 query returns unexpected results when the . . . SELECT cropvarietyname id FROM `seedcalendar-test` cropvarietyname LIMIT 1; The first row has 1 as the id but instead of returning the value 1 this query returns the value 73 The row with id 73 is definitely not the first row! When i use EXPLAIN to analyze this query i get the following result:
C# set accessor accessible to all types in assembly, and get assessor . . . class SomeType { private int length; internal int Length { get { return length; } set length = value; } } } allows all types within the assembly of SomeType to use get and set accessors Problem: how to restrict the access to set to only types derived from SomeType (and SomeType indeed)?
ballerina grpc how to create a client and server - Stack Overflow In this problem, we wish to design and build components of an assessment management system using gRPC The system has three user profiles: learner, administrator and assessor Note that each user s