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How to record webcam and audio using webRTC and a server-based Peer connection
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You should definitely have a look at Kurento. It provides a WebRTC server infrastructure that allows you to record from a WebRTC feed and much more. You can also find some examples for the application you are planning here. It is really easy to add recording capabilities to tha...
How to make join queries using Sequelize on Node.js
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User.hasMany(Post, {foreignKey: 'user_id'})
Post.belongsTo(User, {foreignKey: 'user_id'})
Post.find({ where: { ...}, include: [User]})
Which will give you
SELECT
`posts`.*,
`users`.`username` AS `users.username`, `users`.`email` AS `users.email`,
`users...
SQL Update with row_number()
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DECLARE @id INT
SET @id = 0
UPDATE DESTINATAIRE_TEMP
SET @id = CODE_DEST = @id + 1
GO
try this
http://www.mssqltips.com/sqlservertip/1467/populate-a-sql-server-column-with-a-sequential-number-not-using-an-identity/
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Android - styling seek bar
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I would extract drawables and xml from Android source code and change its color to red.
Here is example how I completed this for mdpi drawables:
Custom red_scrubber_control.xml (add to res/drawable):
<selector xmlns:android="http://schemas.android.com/apk/res/and...
How to get a value of an element by name instead of ID
...uld I get the value of an element via the attribute name instead of the ID . eg if I use by id it would be $('#id').val();
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In Windows cmd, how do I prompt for user input and use the result in another command?
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Try this:
@echo off
set /p id="Enter ID: "
You can then use %id% as a parameter to another batch file like jstack %id%.
For example:
set /P id=Enter id:
jstack %id% > jstack.txt
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How to obtain a Thread id in Python?
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threading.get_ident() works, or threading.current_thread().ident (or threading.currentThread().ident for Python < 2.6).
share
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improv...
Change one value based on another value in pandas
...helpful for you.
import pandas
df = pandas.read_csv("test.csv")
df.loc[df.ID == 103, 'FirstName'] = "Matt"
df.loc[df.ID == 103, 'LastName'] = "Jones"
As mentioned in the comments, you can also do the assignment to both columns in one shot:
df.loc[df.ID == 103, ['FirstName', 'LastName']] = 'Matt'...
Postgresql aggregate array
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Use array_agg: http://www.sqlfiddle.com/#!1/5099e/1
SELECT s.name, array_agg(g.Mark) as marks
FROM student s
LEFT JOIN Grade g ON g.Student_id = s.Id
GROUP BY s.Id
By the way, if you are using Postgres 9.1, you don't need to repeat the columns...
Remove element by id
... }
}
And then you can remove elements like this
document.getElementById("my-element").remove();
or
document.getElementsByClassName("my-elements").remove();
Note: this solution doesn't work for IE 7 and below. For more info about extending the DOM read this article.
EDIT: Reviewing my ans...