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define() vs. const
...constants in classes.
const, being a language construct, can be statically analysed by automated tooling.
const defines a constant in the current namespace, while define() has to be passed the full namespace name:
namespace A\B\C;
// To define the constant A\B\C\FOO:
const FOO = 'BAR';
define('A\B\...
Why is debugging better in an IDE? [closed]
...stopping the application only in exceptional circumstances to allow you to analyse the stack and variables.
View the thread context in multi-threaded applications, which can be difficult to achieve with tracing (as the traces from different threads will be interleaved in the output).
In summary, p...
Sending multipart/formdata with jQuery.ajax
..."#avatar-form").serializefiles(); sending this via ajax data parameter and analysing with express formidable: form.parse(req, function(err, fields, files){ thank you for that code snippet :)
– SchurigH
Nov 19 '13 at 21:53
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How to tell Eclipse Workspace?
...rent-workspace>/<name-of-current-project>
Note - the "erased" procedure works in most cases but can not be used in general, because a project folder does not have to be located in the workspace folder. You can choose external locations during project creation. So if you never uncheck th...
How do I write a correct micro-benchmark in Java?
...nly worth a look.
The jmh is a Java harness for building, running, and analysing nano/micro/macro benchmarks written in Java and other languages targetting the JVM.
Very interesting pieces of information buried in the sample tests comments.
See also:
Avoiding Benchmarking Pitfalls on the JV...
How do I kill all the processes in Mysql “show processlist”?
...
The following will create a simple stored procedure that uses a cursor to kill all processes one by one except for the process currently being used:
DROP PROCEDURE IF EXISTS kill_other_processes;
DELIMITER $$
CREATE PROCEDURE kill_other_processes()
BEGIN
DECLARE...
What is the ideal data type to use when storing latitude / longitude in a MySQL database?
...index.
The biggest benefit of using SDT is that you have access to Spatial Analyses Functions, e.g. calculating distance between two points (ST_Distance) and determining whether one point is contained within another area (ST_Contains).
...
SQL Server reports 'Invalid column name', but the column is present and the query works through mana
...nqualified reference may invalidate a cached execution plan for the stored procedure or query, since the schema to which the reference was bound may change depending on the credentials executing the stored procedure or query. This results in recompilation of the query/stored procedure, a performance...
What is “Linting”?
...
Linting is the process of running a program that will analyse code for potential errors.
See lint on wikipedia:
lint was the name originally given to a particular program that flagged some suspicious and non-portable constructs (likely to be bugs) in C language source code....
How can I clear the SQL Server query cache?
...plan cache carefully. Freeing the plan cache causes, for example, a stored procedure to be recompiled instead of reused from the cache. This can cause a sudden, temporary decrease in query performance.
2. Flush the plan cache for the entire instance and suppress the regular completion message
"DBCC ...