getproperty

how to retrieve nested properties in groovy

由 谁说胖子不能爱 提交于 2019-11-30 18:24:04
I'm wondering what is the best way to retrieve nested properties in Groovy, taking a given Object and arbitrary "property" String. I would like to something like this: someGroovyObject.getProperty("property1.property2") I've had a hard time finding an example of others wanting to do this, so maybe I'm not understanding some basic Groovy concept. It seems like there must be some elegant way to do this. As reference, there is a feature in Wicket that is exactly what I'm looking for, called the PropertyResolver: http://wicket.apache.org/apidocs/1.4/org/apache/wicket/util/lang/PropertyResolver

Best way to get sub properties using GetProperty

由 谁都会走 提交于 2019-11-28 05:53:44
public class Address { public string ZipCode {get; set;} } public class Customer { public Address Address {get; set;} } how can I access eitther "ZipCode" or "Address.ZipCode" with reflection? For example: Typeof(Customer).GetProperty("ZipCode")? Jon Skeet You'd need something like: PropertyInfo addressProperty = typeof(Customer).GetProperty("Address"); ProportyInfo zipCodeProperty = addressProperty.PropertyType.GetProperty("ZipCode"); object address = addressProperty.GetValue(customer, null); object zipCode = zipCodeProperty.GetValue(address, null); Basically if you want to take a string

Java's “os.name” for Windows 10?

由 两盒软妹~` 提交于 2019-11-27 13:51:16
In Java, we can see the property value of os.name to know the name of the underlying operating system: System.getProperty("os.name") . For each edition of Windows, it used to return always the exact name of the OS: Windows XP for XP, Windows Vista for Vista, Windows 7 for Seven, Windows 8.1 for 8.1, and so on... The problem is: I just updated my Windows 8.1 to Windows 10 using the released Microsoft updater, and it seems like this property still remains Windows 8.1 : public class OSTest { public static void main(String[] args) { System.out.println(System.getProperty("os.name")); } } How can I

Best way to get sub properties using GetProperty

由 社会主义新天地 提交于 2019-11-27 05:36:23
问题 public class Address { public string ZipCode {get; set;} } public class Customer { public Address Address {get; set;} } how can I access eitther "ZipCode" or "Address.ZipCode" with reflection? For example: Typeof(Customer).GetProperty("ZipCode")? 回答1: You'd need something like: PropertyInfo addressProperty = typeof(Customer).GetProperty("Address"); ProportyInfo zipCodeProperty = addressProperty.PropertyType.GetProperty("ZipCode"); object address = addressProperty.GetValue(customer, null);

Java's “os.name” for Windows 10?

由 一曲冷凌霜 提交于 2019-11-27 04:01:00
问题 In Java, we can see the property value of os.name to know the name of the underlying operating system: System.getProperty("os.name") . For each edition of Windows, it used to return always the exact name of the OS: Windows XP for XP, Windows Vista for Vista, Windows 7 for Seven, Windows 8.1 for 8.1, and so on... The problem is: I just updated my Windows 8.1 to Windows 10 using the released Microsoft updater, and it seems like this property still remains Windows 8.1 : public class OSTest {

How do I override __getattr__ in Python without breaking the default behavior?

由 左心房为你撑大大i 提交于 2019-11-26 10:07:15
问题 I want to override the __getattr__ method on a class to do something fancy but I don\'t want to break the default behavior. What\'s the correct way to do this? 回答1: Overriding __getattr__ should be fine -- __getattr__ is only called as a last resort i.e. if there are no attributes in the instance that match the name. For instance, if you access foo.bar , then __getattr__ will only be called if foo has no attribute called bar . If the attribute is one you don't want to handle, raise
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