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Capture Video of Android's Screen
...e.mp4
Screen recording is limited to a maximum of 3 minutes.
Reference: https://developer.android.com/studio/command-line/adb.html#screenrecord
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How can I avoid Java code in JSP files, using JSP 2?
...ponse, FilterChain chain) throws ServletException, IOException {
if (((HttpServletRequest) request).getSession().getAttribute("user") == null) {
((HttpServletResponse) response).sendRedirect("login"); // Not logged in, redirect to login page.
} else {
chain.doFilter(request, ...
What's the difference between fill_parent and wrap_content?
...t;?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
andro...
What is a dependency property?
...
The only explanation I found helpful and well written is this one: http://www.wpftutorial.net/dependencyproperties.html
Basically, DependencyProperties differ from regular properties in that they're not just setters / getters for fields in the class, but they retrieve their actual values dy...
PostgreSQL delete all content
...WHERE clause is absent, the effect is to delete all rows
in the table.
http://www.postgresql.org/docs/9.3/static/sql-delete.html
TRUNCATE is a PostgreSQL extension that provides a faster mechanism to
remove all rows from a table. TRUNCATE quickly removes all rows from a
set of tables. I...
In Windows cmd, how do I prompt for user input and use the result in another command?
...
The syntax is as such: set /p variable=[string]
Check out http://commandwindows.com/batch.htm or http://www.robvanderwoude.com/userinput.php for a more deep dive into user input with the different versions of Windows OS batch files.
Once you have set your variable, you can then go ...
Drawing an SVG file on a HTML5 canvas
...ge();
img.onload = function() {
ctx.drawImage(img, 0, 0);
}
img.src = "http://upload.wikimedia.org/wikipedia/commons/d/d2/Svg_example_square.svg";
Live example here. You should see a green square in the canvas. The second green square on the page is the same <svg> element inserted into th...
socket.emit() vs. socket.send()
...ta) {
console.log(data);
});
});
client:
var socket = io.connect('http://localhost');
socket.on('news', function (data) {
console.log(data);
socket.emit('my other event', { my: 'data' });
});
Socket.send does the same, but you don't register to 'news' but to message:
server:
var io ...
How can I pretty-print JSON in a shell script?
...
if the JSON is from an internet source such as an API, you can use
curl http://my_url/ | python -m json.tool
For convenience in all of these cases you can make an alias:
alias prettyjson='python -m json.tool'
For even more convenience with a bit more typing to get it ready:
prettyjson_s()...
bundle install fails with SSL certificate verification error
...the top of the Gemfile in your rails application directory change
source 'https://rubygems.org'
to
source 'http://rubygems.org'
note that the second version is http instead of https
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