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How accurately should I store latitude and longitude?
...o account the various parts of a sphere and a diagonal distance, here is a table of the precisions available:
Datatype Bytes resolution
------------------ ----- --------------------------------
Deg*100 (SMALLINT) 4 1570 m 1.0 mi Cities
DECIMAL(4,2)/(5,2) 5 ...
C default arguments
...1 creative! It has its limitations but also brings named parameters to the table. Note that, {} (empty initializer) is an error C99.
– u0b34a0f6ae
Oct 29 '11 at 3:45
29
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Generating a random & unique 8 character string using MySQL
...'m working on a game which involves vehicles at some point. I have a MySQL table named "vehicles" containing the data about the vehicles, including the column "plate" which stores the License Plates for the vehicles.
...
optional parameters in SQL Server stored proc?
...INSERT INTO ........
END
/* and use it in the query as so*/
SELECT *
FROM Table
WHERE Column = @Parameter
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iPhone Keyboard Covers UITextField
...is is best the explanation out there about this topic. Other tutorials use Table Views, Scroll Views, etc. This actually works without getting into any other complexities, plain and simple. Thanks for sharing this source.
– Renexandro
Feb 17 '14 at 19:39
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GCC -g vs -g3 GDB Flag: What is the Difference?
...includes descriptions of functions and external variables, and line number tables, but no information about local variables.
Level 3 includes extra information, such as all the macro definitions present in the program. Some debuggers support macro expansion when you use -g3.
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What version of javac built my jar?
...iszewski' https://stackoverflow.com/a/3313839/1497139 class number version table to create a bash script jarv to show the versions of all class files in a jar file.
usage
usage: ./jarv jarfile
-h|--help: show this usage
Example
jarv $Home/.m2/repository/log4j/log4j/1.2.17/log4j-1.2.17.jar
jav...
Select records from NOW() -1 Day
...
Sure you can:
SELECT * FROM table
WHERE DateStamp > DATE_ADD(NOW(), INTERVAL -1 DAY)
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What is a deadlock?
...s much as you can.
In databases avoid making lots of changes to different tables in a single transaction, avoid triggers and switch to optimistic/dirty/nolock reads as much as possible.
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Sending a message to nil in Objective-C
...gt; 0 )
or this:
return [myArray count]; // say for number of rows in a table
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