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Easy way to convert Iterable to Collection
...List type instead? This allows you to satisfy more contracts without down-casting or recomposing and Java has no support for lower type bounds anyway.
– Jonathan Neufeld
Nov 3 '15 at 20:12
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Get object by id()? [duplicate]
... this can be done by ctypes:
import ctypes
a = "hello world"
print ctypes.cast(id(a), ctypes.py_object).value
output:
hello world
If you don't know whether the object is still there, this is a recipe for undefined behavior and weird crashes or worse, so be careful.
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How do I compare two DateTime objects in PHP 5.2.8?
...a really wicked way to treat these cases, no other language (as I know of) casts to numbers when you have two strings to compare. It really screws your code if you actually want to make a lexicographical comparison.
– MaxArt
Apr 15 '16 at 14:53
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Set object property using reflection
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The part where you get the property type and then cast it was really useful for me. It works like a charm. Thank you
– Marc
Sep 24 '15 at 14:25
add a ...
Retrieving Property name from lambda expression
...pression if your expression represents a reference type. Everything can be cast to an object, but value types must be boxed. This is why the UnaryExpression exists. Reference.
For the sakes of readability (@Jowen), here's an expanded equivalent:
public string GetName<TSource, TField>(Express...
Checking if an object is null in C#
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Luca, you can also avoid equality overrides by casting to 'object' in the test. On a similar vein, this answer should claim this instead: "if((object)data != null)" since it avoids errors when equality has been overriden.
– DAG
Mar 1...
Get size of an Iterable in Java
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You can cast your iterable to a list then use .size() on it.
Lists.newArrayList(iterable).size();
For the sake of clarity, the above method will require the following import:
import com.google.common.collect.Lists;
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C# equivalent of the IsNull() function in SQL Server
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you can cast dbnull to an object ((object)oldValue ?? (object)DBNull.Value))
– Jeremy Gray
Mar 2 '11 at 19:17
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How to ignore SSL certificate errors in Apache HttpClient 4.0
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I get the error that an X509TrustManager can't be cast to a TrustManager.
– MW.
Jan 16 '13 at 19:36
2
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How to compare arrays in C#? [duplicate]
...tS pointed out. Naturally that only works if all the items can actually be cast to the same type, but that is usually the case if you can compare them anyway. Example:
childe1.OfType<Person>().SequenceEqual(grandFatherNode.OfType<Person>())
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