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Calculate the median of a billion numbers
...ian of medians and quickselect algorithms. en.wikipedia.org/wiki/Selection_algorithm
– Dimath
Jan 9 '13 at 2:32
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How to get a Static property with Reflection
...ties is:
obj.GetType.GetProperty(propName, Reflection.BindingFlags.Public _
Or Reflection.BindingFlags.Static Or Reflection.BindingFlags.Instance Or _
Reflection.BindingFlags.FlattenHierarchy)
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JavaFX Application Icon
...class.getResourceAsStream( "icon.png" ))); works.
– k_o_
Feb 13 '16 at 0:19
3
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How to search in array of object in mongodb
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Use $elemMatch to find the array of particular object
db.users.findOne({"_id": id},{awards: {$elemMatch: {award:'Turing Award', year:1977}}})
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The preferred way of creating a new element with jQuery
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I always use the $ is the variable is a jquery object, $_ if it is a jQuery collection, and _var if it is a counter. The var for regular variables.
– Casey
Oct 23 '15 at 21:33
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Is there a goto statement in Java?
...reason to use goto that I can think of is this:
for (int i = 0; i < MAX_I; i++) {
for (int j = 0; j < MAX_J; j++) {
// do stuff
goto outsideloops; // to break out of both loops
}
}
outsideloops:
In Java you can do this like this:
loops:
for (int i = 0; i < MAX_I;...
Precision String Format Specifier In Swift
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a simple way is:
import Foundation // required for String(format: _, _)
print(String(format: "hex string: %X", 123456))
print(String(format: "a float number: %.5f", 1.0321))
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Multiple DB Contexts in the Same DB and Application in EF 6 and Code First Migrations
...lied to the target database.
Applying explicit migrations: [201402032113124_InitialDatabaseCreation].
Applying explicit migration: 201402032113124_InitialDatabaseCreation.
Running Seed method.
PM> Update-Database -ConfigurationTypeName WebApplication3.Migrations.AnotherDbContext.Configuration
Sp...
How to create a MySQL hierarchical recursive query
...s, path IDs, or self-joins.
MySQL 8+
with recursive cte (id, name, parent_id) as (
select id,
name,
parent_id
from products
where parent_id = 19
union all
select p.id,
p.name,
p.parent_id
from products p
inn...
Django: Set foreign key using integer?
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Yep:
employee = Employee(first_name="Name", last_name="Name")
employee.type_id = 4
employee.save()
ForeignKey fields store their value in an attribute with _id at the end, which you can access directly to avoid visiting the database.
The _id version of...