I am using the Remix IDE and the followinf code is throwing the error:
:browser/tests/project/record.sol:18:21: ParserError: Expected ';' but
got '[' address docs[] = new ;
pragma experimental ABIEncoderV2;
pragma solidity >=0.4.18;
contract Record {
struct MedRecord {
string password;
string name;
address patient;
address[] doctor;
}
mapping(address => MedRecord) internal medRecords;
address[] public recordList;
function addRecord(address _key, string memory password, string memory name) public {
address docs[] = new ;
medRecords[_key] = MedRecord(password, name, _key, []);
recordList.push(_key);
}
function remove(address _key) public {
delete medRecords[_key];
}
// function contains(address _key) public view returns (bool) {
// return MedRecords[_key][0] != '';
// }
function getByKey(address _key) public view returns (MedRecord memory) {
return medRecords[_key];
}
}
However, the code looks fine to me.
This statement is not complete :
address docs[] = new ;
You should write something like this instead :
address[] memory docs = new address[](2);
Related
I tried this solution: Custom fields with FormBuilder in the Microsoft Bot Framework
But failed to get it working....The problem I encountered is that when I assign the base.Form = value, the _prompt in the _field gets a default recognizer, and it won't get overriden in the next line's SetRecognizer call, that only replaces the _field's recognizer.
However the matching process uses the _prompt's recognizer internally ( ? ).
Here is my code:
public class LuisIntentRecognizer<T> : RecognizePrimitive<T>
where T : class
{
public LuisIntentRecognizer(IField<T> field, string luisModelID, string luisSubscriptionKey)
: base(field)
{
_luisModelID = luisModelID;
_luisSubscriptionKey = luisSubscriptionKey;
}
public override DescribeAttribute ValueDescription(object value)
{
return new DescribeAttribute((string)value);
}
public override IEnumerable<string> ValidInputs(object value)
{
yield return (string)value;
}
public override TermMatch Parse(string input)
{
TermMatch result = null;
if (!string.IsNullOrWhiteSpace(input))
{
var luisModel = new LuisModelAttribute(_luisModelID, _luisSubscriptionKey);
var luisService = new LuisService(luisModel);
var luisResult = luisService.QueryAsync(input).Result; // TODO refactor somehow to async
var winner = luisResult.Intents.MaxBy(i => i.Score ?? 0d);
if (winner != null && !string.IsNullOrEmpty(winner.Intent))
{
result = new TermMatch(0, winner.Intent.Length, 0.0, winner.Intent);
}
else
{
result = new TermMatch(0, input.Length, 0.0, input);
}
}
return result;
}
public override string Help(T state, object defaultValue)
{
var prompt = new Prompter<T>(_field.Template(TemplateUsage.StringHelp), _field.Form, null);
var args = HelpArgs(state, defaultValue);
return prompt.Prompt(state, _field.Name, args.ToArray()).Prompt;
}
private string _luisModelID;
private string _luisSubscriptionKey;
}
public class LuisIntentField<T> : FieldReflector<T>
where T : class
{
public LuisIntentField(string name, string luisModelID, string luisSubscriptionKey, bool ignoreAnnotations = false)
: base(name, ignoreAnnotations)
{
_luisModelID = luisModelID;
_luisSubscriptionKey = luisSubscriptionKey;
}
public override IForm<T> Form
{
set
{
base.Form = value;
base.SetRecognizer(new LuisIntentRecognizer<T>(this, _luisModelID, _luisSubscriptionKey));
}
}
private string _luisModelID;
private string _luisSubscriptionKey;
}
Could anyone get it working?
Thanks
It seems to be a bug in the framework indeed: https://github.com/Microsoft/BotBuilder/issues/879
A package is created to define a custom collection and a stored proc having this custom collection as an input param. How do I call this proc from c# ?
Here's the package:
CREATE OR REPLACE PACKAGE pkg_name
AS
TYPE customCollectionType IS VARRAY(200) OF VARCHAR2 (1000);
PROCEDURE ProcName(p_collection IN customCollectionType);
END pkg_name;
/
CREATE OR REPLACE PACKAGE BODY pkg_name
AS
PROCEDURE StudyProc (p_StudyNum IN customCollectionType)
IS
........................
END pkg_name;
Here's factory implementation of customCollectionType:
public class PlaceHolderType : IOracleCustomType, INullable
{
[OracleArrayMapping()]
public string[] Array;
private bool m_bIsNull;
private OracleUdtStatus[] m_statusArray;
public OracleUdtStatus[] StatusArray
{
get
{
return this.m_statusArray;
}
set
{
this.m_statusArray = value;
}
}
public virtual bool IsNull
{
get
{
return m_bIsNull;
}
}
public static PlaceHolderType Null
{
get
{
PlaceHolderType p = new PlaceHolderType();
p.m_bIsNull = true;
return p;
}
}
public virtual void FromCustomObject(OracleConnection con, IntPtr pUdt)
{
OracleUdt.SetValue(con, pUdt, 0, Array, m_statusArray);
return;
}
public virtual void ToCustomObject(OracleConnection con, IntPtr pUdt)
{
object objectStatusArray = null;
Array = (string[])OracleUdt.GetValue(con, pUdt, 0, out objectStatusArray);
m_statusArray = (OracleUdtStatus[])objectStatusArray;
}
public override string ToString()
{
return string.Empty;
}
}
[OracleCustomTypeMappingAttribute("USER_NAME.PKG_NAME.CUSTOMCOLLECTIONTYPE")]
public class CUSTOMCOLLECTIONTYPE: IOracleCustomTypeFactory, IOracleArrayTypeFactory
{
// Implementation of IOracleCustomTypeFactory.CreateObject()
public IOracleCustomType CreateObject()
{
// Return a new custom object
//OracleString or;
return new PlaceHolderType();
}
#region IOracleArrayTypeFactory Members
public Array CreateArray(int numElems)
{
return new string[numElems];
}
public Array CreateStatusArray(int numElems)
{
return new OracleUdtStatus[numElems];
}
#endregion
}
Here's the call:
cmd.Connection = OracleConnectionObj;
cmd.BindByName = true;
cmd.CommandText = "PKG_NAME.PROC_NAME";
cmd.CommandType = System.Data.CommandType.StoredProcedure;
OracleParameter param1 = new OracleParameter();
Array inputValue = (new CUSTOMCOLLECTIONTYPE()).CreateArray(5);
System.Array.Copy(SomeArray, inputValue, 5);
param1.OracleDbType = OracleDbType.Array;
param1.Direction = ParameterDirection.Input;
param1.UdtTypeName = "USER_NAME.CUSTOMCOLLECTIONTYPE";
param1.Value = inputValue;
cmd.Parameters.Add(param1);
cmd.ExecuteNonQuery();
The error in .Net is:
"OCI-22303: type \"USER_NAME\".\"CUSTOMCOLLECTIONTYPE\" not found"
When you are passing an object to the procedure from C# which is mapped to a UDT, then you need to define the type at the schema level and not at the package level. So, you need to execute the following command in sqlplus :-
Create Type customCollectionType AS VARRAY(200) OF VARCHAR2 (1000);
and remove the declaration of customCollectionType from your package spec.
Trying to save selections from a CheckBoxList as a comma-separated list (string) in DB (one or more choices selected). I am using a proxy in order to save as a string because otherwise I'd have to create separate tables in the DB for a relation - the work is not worth it for this simple scenario and I was hoping that I could just convert it to a string and avoid that.
The CheckBoxList uses an enum for it's choices:
public enum Selection
{
Selection1,
Selection2,
Selection3
}
Not to be convoluted, but I use [Display(Name="Choice 1")] and an extension class to display something friendly on the UI. Not sure if I can save that string instead of just the enum, although I think if I save as enum it's not a big deal for me to "display" the friendly string on UI on some confirmation page.
This is the "Record" class that saves a string in the DB:
public virtual string MyCheckBox { get; set; }
This is the "Proxy", which is some sample I found but not directly dealing with enum, and which uses IEnumerable<string> (or should it be IEnumerable<Selection>?):
public IEnumerable<string> MyCheckBox
{
get
{
if (String.IsNullOrWhiteSpace(Record.MyCheckBox)) return new string[] { };
return Record
.MyCheckBox
.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries)
.Select(r => r.Trim())
.Where(r => !String.IsNullOrEmpty(r));
}
set
{
Record.MyCheckBox = value == null ? null : String.Join(",", value);
}
}
To save in the DB, I am trying to do this in a create class:
proxy.MyCheckBox = record.MyCheckBox; //getting error here
but am getting the error:
Cannot implicitly convert 'string' to System.Collections.Generic.IEnumerable'
I don't know, if it's possible or better, to use Parse or ToString from the API for enum values.
I know that doing something like this will store whatever I put in the ("") into the DB, so it's just a matter of figuring out how to overcome the error (or, if there is an alternative):
proxy.MyCheckBox = new[] {"foo", "bar"};
I am not good with this stuff and have just been digging and digging to come up with a solution. Any help is much appreciated.
You can accomplish this using a custom user type. The example below uses an ISet<string> on the class and stores the values as a delimited string.
[Serializable]
public class CommaDelimitedSet : IUserType
{
const string delimiter = ",";
#region IUserType Members
public new bool Equals(object x, object y)
{
if (ReferenceEquals(x, y))
{
return true;
}
var xSet = x as ISet<string>;
var ySet = y as ISet<string>;
if (xSet == null || ySet == null)
{
return false;
}
// compare set contents
return xSet.Except(ySet).Count() == 0 && ySet.Except(xSet).Count() == 0;
}
public int GetHashCode(object x)
{
return x.GetHashCode();
}
public object NullSafeGet(IDataReader rs, string[] names, object owner)
{
var outValue = NHibernateUtil.String.NullSafeGet(rs, names[0]) as string;
if (string.IsNullOrEmpty(outValue))
{
return new HashSet<string>();
}
else
{
var splitArray = outValue.Split(new[] {Delimiter}, StringSplitOptions.RemoveEmptyEntries);
return new HashSet<string>(splitArray);
}
}
public void NullSafeSet(IDbCommand cmd, object value, int index)
{
var inValue = value as ISet<string>;
object setValue = inValue == null ? null : string.Join(Delimiter, inValue);
NHibernateUtil.String.NullSafeSet(cmd, setValue, index);
}
public object DeepCopy(object value)
{
// return new ISet so that Equals can work
// see http://www.mail-archive.com/nhusers#googlegroups.com/msg11054.html
var set = value as ISet<string>;
if (set == null)
{
return null;
}
return new HashSet<string>(set);
}
public object Replace(object original, object target, object owner)
{
return original;
}
public object Assemble(object cached, object owner)
{
return DeepCopy(cached);
}
public object Disassemble(object value)
{
return DeepCopy(value);
}
public SqlType[] SqlTypes
{
get { return new[] {new SqlType(DbType.String)}; }
}
public Type ReturnedType
{
get { return typeof(ISet<string>); }
}
public bool IsMutable
{
get { return false; }
}
#endregion
}
Usage in mapping file:
Map(x => x.CheckboxValues.CustomType<CommaDelimitedSet>();
I want to retrieve a specific record using IQueryable. But i get error 'No generic method 'Where' on type 'System.Linq.Queryable' is compatible with the supplied type arguments and arguments. No type arguments should be provided if the method is non-generic.'. I got the selected row id, but I cannot display it out. Here is my code.
internal static IQueryable GetRecordsFromPrimaryKeys(this IQueryable datasource, List<FilterDescriptor> primaryKeys)
{
IQueryable data = datasource;
ParameterExpression paramExp = null;
bool firstLoop = false;
System.Linq.Expressions.Expression predicate = null;
var RecordType = datasource.GetObjectType();
paramExp = RecordType.Parameter();
foreach (FilterDescriptor primaryKey in primaryKeys)
{
if (!(firstLoop))
{
predicate = data.Predicate(paramExp, primaryKey.ColumnName, primaryKey.Value, FilterType.Equals, false, RecordType);
firstLoop = true;
}
else
{
predicate = predicate.AndPredicate(data.Predicate(paramExp, primaryKey.ColumnName, primaryKey.Value, FilterType.Equals, false, RecordType));
}
}
if (paramExp != null && predicate != null)
{
var lambda = Expression.Lambda(predicate, paramExp);
data = data.Provider.CreateQuery(
Expression.Call(
typeof(Queryable),
"Where",
new Type[] { data.ElementType },
data.Expression,
lambda
)
);
}
return data;
}
My Code works well for IEnumerable/IQueryable/ICollection . But it throws the exception when i specify the class with the keyword virtual and type as ICollection. My code is
public class RoomType
{
public int ID { get; set; }
[MaxLength(10, ErrorMessage = "Room code cannot be longer than 10 characters.")]
public string Code { get; set; }
[MaxLength(50, ErrorMessage = "Room name cannot be longer than 50 characters.")]
public string Name { get; set; }
public virtual ICollection<RoomCategory> RoomCategories { get; set; }
}
Some random values gets appended to 'RecordType' while using the keyword 'virtual'. I think this leads to the exception. Still searching for the solution.
I don't know what is going wrong . Any suggestions welcome.
Thanks.
I just ran into a similar situation. The problem stems from the fact that in some cases you're dealing with the "proxy" not the actual entity. So, you want to make sure that RecordType matches data.ElementType.
try:
var recordType = datasource.GetObjectType();
// make sure we have the correct type (not the proxy)
if (recordType.BaseType.Name != "Object")
recordType = recordType.BaseType;
Or better yet, try:
var recordType = data.ElementType
Try to use typeof(Enumerable) instead of typeof(Queryable)
I've seen question ReactiveUI: Using CanExecute with a ReactiveCommand, however my issue is that I have a string property, UniqueID, and I want it to only execute when it has a length equal to 7. I cannot seem to come up with an observer that doesn't crash the program. What is the correct simple way to do this?
public class MainViewModel : ReactiveValidatedObject
{
public MainViewModel()
{
RetrieveRecord = new ReactiveAsyncCommand(/* what goes here for CanExecute */);
RetrieveRecord.Subscriber(x => Record = new Record(UniqueId));
// or do we use the method RetrieveRecord.CanExecute()?
// the next line crashes the app
RetrieveRecord.CanExecute(UniqueId.Length == 7);
}
public ReactiveAsyncCommand RetrieveRecord { get; private set; }
string _uniqueId;
public string UniqueId
{
get { return _uniqueId; }
set
{
_clientId = value;
this.RaisePropertyChanged(x => x.UniqueId);
}
}
}
How about:
RetrieveRecord = new ReactiveAsyncCommand(
this.WhenAny(x => x.UniqueId, x => x.Value.Length == 7));