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Programmatic equivalent of default(Type)
...
Why not call the method that returns default(T) with reflection ? You can use GetDefault of any type with:
public object GetDefault(Type t)
{
return this.GetType().GetMethod("GetDefaultGeneric").MakeGenericMethod(t)....
Java inner class and static nested class
... static and non-static. Nested classes that are declared static are simply called static nested classes. Non-static nested classes are called inner classes.
Static nested classes are accessed using the enclosing class name:
OuterClass.StaticNestedClass
For example, to create an object for the ...
Easiest way to copy a table from one database to another?
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The copied table did not have primary key and auto increment set. You have to run this after ALTER TABLE db1.table1 ADD PRIMARY KEY (id); ALTER TABLE db1.table1 MODIFY COLUMN id INT AUTO_INCREMENT;
– Weston Ganger
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What's the best way to iterate an Android Cursor?
... Just to add a few cents... Don't check if cursor has data by calling moveToFirst() before you are going to iterate over cursor - you will lose the first entry
– AAverin
Nov 13 '13 at 16:36
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Timeout expired. The timeout period elapsed prior to completion of the operation or the server is no
...our database. It may cause slower queries for a bit. In the end, it's your call though.
– Marnix van Valen
Dec 24 '19 at 13:22
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show 6 more...
What should I name a table that maps two tables together? [closed]
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A Newspaper has many Readers and a Reader has many Newspapers
You could call the relationship NewspaperReader but a name like Subscription might convey better what the table is about.
The name Subscription also is more idiomatic in case you want to map the table to objects later on.
The convent...
Changing website favicon dynamically
...nyway, you can remove shortcut from the rel attribute. shortcut is an invalid IE-proprietary link relation!
– Mathias Bynens
Jun 7 '10 at 12:45
8
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Should I instantiate instance variables on declaration or in the constructor?
...ad, the Java compiler generates instance-field initialization code automatically and puts it in the constructor or constructors for the class. The initialization code is inserted into a constructor in the order it appears in the source code, which means that a field initializer can use the initial v...
How to check if object property exists with a variable holding the property name?
...roperty :
var loan = { amount: 150 };
if(Object.prototype.hasOwnProperty.call(loan, "amount"))
{
//will execute
}
Note: using Object.prototype.hasOwnProperty is better than loan.hasOwnProperty(..), in case a custom hasOwnProperty is defined in the prototype chain (which is not the case here...
Breadth First Vs Depth First
...er.
For depth first use a stack. (The recursive implementation uses the call-stack...)
For breadth-first use a queue.
The recursive implementation looks like
ProcessNode(Node)
Work on the payload Node
Foreach child of Node
ProcessNode(child)
/* Alternate time to work on the pa...