Make SchemaShape.Column a struct instead of a class #1822
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wschin
changed the title
| /// This documents that the parameter can not legally be null because it is struct. | ||
| /// </summary> | ||
| [Conditional("INVARIANT_CHECKS")] | ||
| public static void CheckValueOrDefault<T>(T val) where T : struct |
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CheckValueOrDefault [](start = 27, length = 19)
Given that we're now doing this through other means, should probably revert these changes as well.
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Ok. Note that in TrainerEstimatorBase.cs we now do
private protected TrainerEstimatorBase(IHost host,
SchemaShape.Column feature,
SchemaShape.Column label,
SchemaShape.Column weight = default)
{
Contracts.CheckValue(host, nameof(host));
Host = host;
Host.Check(feature.IsValid, nameof(feature));
Host.Check(label.IsValid, nameof(label));
FeatureColumn = feature;
LabelColumn = label;
WeightColumn = weight;
}after removing CheckValueOrDefault(weight, nameof(weight)) and CheckValueOrDefault(label, nameof(label)).
In reply to: 238870053 [](ancestors = 238870053)
| public static bool IsNormalized(this SchemaShape.Column col) | ||
| { | ||
| Contracts.CheckValue(col, nameof(col)); | ||
| Contracts.Check(col.IsValid, nameof(col)); |
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Check [](start = 22, length = 5)
This would be CheckParam. Also you will want to provide some sort of message. #Resolved
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Sure. We will use Contracts.CheckParam(col.IsValid, nameof(col), "struct not initialized"); I will do the same for other public functions.
In reply to: 238870227 [](ancestors = 238870227)
TomFinley
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TomFinley
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Just an urgent note about Schema.
| /// and also since it doesn't specify exact <see cref="ColumnType"/>'s for vectors and keys. | ||
| /// </summary> | ||
| public sealed class SchemaShape | ||
| public sealed class SchemaShape : IReadOnlyList<SchemaShape.Column> |
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: IReadOnlyList<SchemaShape.Column> [](start = 36, length = 35)
This is not right! You can make this a ReadOnlyList with proper indexers and so forth. Or you could expose this Columns thing as you do below. You CANNOT DO BOTH.
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You're absolutely right. Thanks a lot for pointing this out.
In reply to: 239226291 [](ancestors = 239226291)
| protected override void CheckLabelCompatible(SchemaShape.Column labelCol) | ||
| { | ||
| Contracts.AssertValue(labelCol); | ||
| Contracts.Assert(labelCol.IsValid, nameof(labelCol)); |
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, nameof(labelCol) [](start = 45, length = 18)
This is an assert. It doesn't need or benefit from a message. Also this message, being just the parameter name, might not be the most helpful. (Again not suggesting that it needs a message, just pointing out that if it needed one this would not necessarily be helpful. But please don't add one.)
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ghost
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Fixes #1706.