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Recommended way to save uploaded files in a servlet application
...bapp's deploy folder will not work at all. Some servers do (either by default or by configuration) not expand the deployed WAR file into the local disk file system, but instead fully in the memory. You can't create new files in the memory without basically editing the deployed WAR file and redeployi...
What is the difference between onBlur and onChange attribute in HTML?
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An example to make things concrete. If you have a selection thus:
<select onchange="" onblur="">
<option>....
</select>
the onblur() is called when you navigate away. The onchange() is called when you select a different option from the selection - i.e. you change what i...
Convert all strings in a list to int
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Use the map function (in Python 2.x):
results = map(int, results)
In Python 3, you will need to convert the result from map to a list:
results = list(map(int, results))
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Removing the remembered login and password list in SQL Server Management Studio
...ver types / servers / connections requires us to loop
// through multiple nested collections to find the connection to be removed.
// We start here with the server types
var serverTypes = settings.SSMS.ConnectionOptions.ServerTypes;
foreach (var serverType in server...
ESP8285接入App Inventor 2深度调研：4种连接方案+是否需要开发拓展 - 创客...
...or用内置Web组件调用。
ESP8285端代码(Arduino)：
#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>
ESP8266WebServer server(80);
server.on("/led", HTTP_GET, []() {
int state = server.arg("state").toInt();
digitalWrit...
jQuery event for images loaded
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This is the answer- handles multiple images, cached images, browser quirks, broken images, and it's current. Beautiful.
– Yarin
Mar 13 '12 at 0:00
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Extension method and dynamic object
...adable to cast back to the know type, this works: Console.WriteLine(((List<int>)dList).First()); Or Console.WriteLine((dList as List<int>).First());.
– AVee
Jun 18 '19 at 13:46
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How to set initial value and auto increment in MySQL?
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Use this:
ALTER TABLE users AUTO_INCREMENT=1001;
or if you haven't already added an id column, also add it
ALTER TABLE users ADD id INT UNSIGNED NOT NULL AUTO_INCREMENT,
ADD INDEX (id);
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How to set transform origin in SVG
...certain elements in SVG document using javascript. The problem is, by default, it always applies the transform around the origin at (0, 0) – top left.
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Generic htaccess redirect www to non-www
... do it without mod_rewrite (and apparently it's better for performance).
<VirtualHost *>
ServerName www.example.com
Redirect 301 / http://example.com/
</VirtualHost>
I got that answer here: https://serverfault.com/questions/120488/redirect-url-within-apache-virtualhost/120507#1205...