properties

问题 I have a module for database communication (my-db-lib) , and which is imported to spring boot based web application module (my-web-app) I want to set configuration about db in my-db-lib , and set about web app in my-web-app When I use yml file, application.yml in my-db-lib db: url: localhost application.yml in my-web-app app: message: hello When my-web-app runs, it can read only app.message not db.url It seems that yml files are just replaced with one which has highest priority (when not use

问题 I'm using F# 4.7 with <LangVersion>preview</LangVersion> in my project file. I have a type like this: type Record = { Name : string Description : string FieldNotInterestedIn: int } I'd like to get the names of certain fields in a type-safe way, but not all of them. I know I can get all the field names using reflection. Here's the most concise code I came up with. Can it be any more concise? let certainFieldNames = let r = Unchecked.defaultof<Record> [ nameof r.Name nameof r.Description ] 回答1:

问题 I'm using F# 4.7 with <LangVersion>preview</LangVersion> in my project file. I have a type like this: type Record = { Name : string Description : string FieldNotInterestedIn: int } I'd like to get the names of certain fields in a type-safe way, but not all of them. I know I can get all the field names using reflection. Here's the most concise code I came up with. Can it be any more concise? let certainFieldNames = let r = Unchecked.defaultof<Record> [ nameof r.Name nameof r.Description ] 回答1:

问题 Consider this simple JavaScript module pattern: var human = (function () { var _name = ''; return { name: _name, setName: function (name) { _name = name; } } })(); human.setName('somebody'); alert(human.name); // shows an empty string human = (function () { var _name = ''; return { name: function() { return _name; }, setName: function (name) { _name = name; } } })(); human.setName('somebody'); alert(human.name()); // shows 'somebody' Why the second closure works fine, while the first closure

问题 So let's say that I have the following classes: public class Model { public AnotherModel InnerModel { get; set; } } public class AnotherModel { public String Value{ get; set; } } Now I have the following function: public static void Foo<T, U>(Expression<Func<T, U>> func) { // Get the property info from func } What I would like to do now is the following: Foo<Model, String>(o => o.InnerModel.Value) Here comes the problem: I know that you can fetch the PropertyInfo from the expression func by

问题 So let's say that I have the following classes: public class Model { public AnotherModel InnerModel { get; set; } } public class AnotherModel { public String Value{ get; set; } } Now I have the following function: public static void Foo<T, U>(Expression<Func<T, U>> func) { // Get the property info from func } What I would like to do now is the following: Foo<Model, String>(o => o.InnerModel.Value) Here comes the problem: I know that you can fetch the PropertyInfo from the expression func by

问题 I have public bool Included { get; set; } That I want to change to: public bool IsIncluded { get; set; } I want to have backward compatibility. I'd like to only have IsIncluded defined in code but being able to read old xml where the property would be "Included". Does XmlSerializer support it and how ? Note: I tried without success... (does not deserialize it) public bool IsIncluded { get; set; } [Obsolete] public bool Included { set { IsIncluded = value; } get { return IsIncluded; } } Update

问题 I have tabcontrol component on my form. After I put XPManifest, its color became white, I want to change it, but couldn't find color property. And I don't want to remove XPManifest as well. Is there any way to solve this issue? 回答1: To change the color of a TTabControl must put the OwnerDraw property to true false and write your own code to draw the tabs and the background in the OnDrawTab Event. see this example. procedure TForm38.TabControl1DrawTab(Control: TCustomTabControl; TabIndex:

问题 I have tabcontrol component on my form. After I put XPManifest, its color became white, I want to change it, but couldn't find color property. And I don't want to remove XPManifest as well. Is there any way to solve this issue? 回答1: To change the color of a TTabControl must put the OwnerDraw property to true false and write your own code to draw the tabs and the background in the OnDrawTab Event. see this example. procedure TForm38.TabControl1DrawTab(Control: TCustomTabControl; TabIndex:

问题 I have tabcontrol component on my form. After I put XPManifest, its color became white, I want to change it, but couldn't find color property. And I don't want to remove XPManifest as well. Is there any way to solve this issue? 回答1: To change the color of a TTabControl must put the OwnerDraw property to true false and write your own code to draw the tabs and the background in the OnDrawTab Event. see this example. procedure TForm38.TabControl1DrawTab(Control: TCustomTabControl; TabIndex: