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Good Hash Function for Strings
...le check - The hashCode() return value will be used by Java to map to some table index before storing the object. So, if the hashCode() returns m, it does something like (m mod k) to get an index of the table of size k. Is that right?
– whitehat
Oct 17 '15 at 2...
Best explanation for languages without null
...f why null is undesirable is that meaningless states should not be representable.
Suppose I'm modeling a door. It can be in one of three states: open, shut but unlocked, and shut and locked. Now I could model it along the lines of
class Door
private bool isShut
private bool isLocked
an...
Select SQL Server database size
...
ALTER FUNCTION [dbo].[GetDBSize]
(
@db_name NVARCHAR(100)
)
RETURNS TABLE
AS
RETURN
SELECT
database_name = DB_NAME(database_id)
, log_size_mb = CAST(SUM(CASE WHEN type_desc = 'LOG' THEN size END) * 8. / 1024 AS DECIMAL(8,2))
, row_size_mb = CAST(SUM(CASE WHEN type_desc...
ALTER TABLE, set null in not null column, PostgreSQL 9.1
I have a table with not null column, How to set a null value in this column as default?
4 Answers
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Style input element to fill remaining width of its container
...
as much as everyone hates tables for layout, they do help with stuff like this, either using explicit table tags or using display:table-cell
<div style="width:300px; display:table">
<label for="MyInput" style="display:table-cell; width:1...
Auto Generate Database Diagram MySQL [closed]
... every project. Is there a tool out there that will let me select specific tables and then create a database diagram for me based on a MySQL database? Preferably it would allow me to edit the diagram afterward since none of the foreign keys are set...
...
SQLite - increase value by a certain number
is it possible to increase a certain value in a table by a certain number without reading last value and afterwards updating it?
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Using margin:auto to vertically-align a div
...he three elements have to be nested like so:
.container {
display: table;
height: 100%;
position: absolute;
overflow: hidden;
width: 100%;
}
.helper {
#position: absolute;
#top: 50%;
display: table-cell;
vertical-align: middle;
}
.content {
#position: rela...
C# switch statement limitations - why?
...a CIL switch statement which is indeed a constant time branch using a jump table. However, in sparse cases as pointed out by Ivan Hamilton the compiler may generate something else entirely.
This is actually quite easy to verify by writing various C# switch statements, some sparse, some dense, and ...
sql server invalid object name - but tables are listed in SSMS tables list
.... However the SSMS intellisense does not recognize more than half of the tables which have been created.
16 Answers
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