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how to read System environment variable in Spring applicationContext
...ng a bean definition like this:
e.g.
<bean class="org.springframework.web.context.support.ServletContextPropertyPlaceholderConfigurer">
<property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
<property name="searchSystemEnvironment" value="true" ...
Why should I use a semicolon after every function in javascript?
... FormalParameterListopt ) { FunctionBody }
There's no semicolon grammatically required, but might wonder why?
Semicolons serve to separate statements from each other, and a FunctionDeclaration is not a statement.
FunctionDeclarations are evaluated before the code enters into execution, hoisting ...
How to color the Git console?
...obal color.ui auto
The color.ui is a meta configuration that includes all the various color.* configurations available with git commands. This is explained in-depth in git help config.
So basically it's easier and more future proof than setting the different color.* settings separately.
In-d...
How to find a Java Memory Leak
... supposed to be able to find the root reference ( ref ) or whatever it is called. Basically, I can tell that there are several hundred megabytes of hash table entries ([java.util.HashMap$Entry or something like that), but maps are used all over the place... Is there some way to search for large maps...
Solving a “communications link failure” with JDBC and MySQL [duplicate]
...hat have been mentioned in different web sites, but non of them worked. Finally I changed my code and found out what was the problem. I'll try to tell you about different approaches and sum them up here.
While I was seeking the internet to find the solution for this error, I figured out that there ...
Accessing console and devtools of extension's background.js
...updated the picture. The triangle has been removed, that step now automatically happens when Developer mode is activated.
– Rob W
Oct 23 '14 at 9:28
...
Detect rotation of Android phone in the browser with JavaScript
...ow:
// Detect whether device supports orientationchange event, otherwise fall back to
// the resize event.
var supportsOrientationChange = "onorientationchange" in window,
orientationEvent = supportsOrientationChange ? "orientationchange" : "resize";
window.addEventListener(orientationEvent, f...
How to Store Historical Data
...current, active record. So, let's say I have table FOO. Under my system, all active records will go in FOO, and all historical records will go in FOO_Hist. Many different fields in FOO can be updated by the user, so I want to keep an accurate account of everything updated. FOO_Hist holds the exa...
What is %2C in a URL?
...
In Firefox there is Ctrl+Shift+K for the Web console, then you type
;decodeURIComponent("%2c")
mind the semicolon in the beginning
if you Copy&Paste, you should first enable it (the console will warn you)
and you get the answer:
","
...
What are Long-Polling, Websockets, Server-Sent Events (SSE) and Comet?
...
In the examples below the client is the browser and the server is the webserver hosting the website.
Before you can understand these technologies, you have to understand classic HTTP web traffic first.
Regular HTTP:
A client requests a webpage from a server.
The server calculates the respon...