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Is there a CSS selector by class prefix?
...us-" occurring directly after a space character. Class names are separated by whitespace per the HTML spec, hence the significant space character. This checks any other classes after the first if multiple classes are specified, and adds a bonus of checking the first class in case the attribute value...
Python integer division yields float
...wered Aug 15 '09 at 21:50
Jonas ByströmJonas Byström
21k2121 gold badges8383 silver badges132132 bronze badges
...
How to select multiple rows filled with constants?
...providable with an external variable):
SELECT level
FROM dual
CONNECT BY
level <= :n
in Oracle,
WITH q (l) AS
(
SELECT 1
UNION ALL
SELECT l + 1
FROM q
WHERE l < @n
)
SELECT l
FROM q
-- OPTION (MAXRECURSION 0)...
Android accelerometer accuracy (Inertial navigation)
...
You get position by integrating the linear acceleration twice but the error is horrible. It is useless in practice.
Here is an explanation why (Google Tech Talk) at 23:20. I highly recommend this video.
It is not the accelerometer noise tha...
Differences between Proxy and Decorator Pattern
...icts the client. Decorator does not. Proxy may restrict what a client does by controlling access to functionality; or it may restrict what a client knows by performing actions that are invisible and unknown to the client. Decorator does the opposite: it enhances what its delegate does in a way that ...
Immutable vs Mutable types
...'bar'
print s # foobar
The value of the variable changes, but it changes by changing what the variable refers to. A mutable type can change that way, and it can also change "in place".
Here is the difference.
x = something # immutable type
print x
func(x)
print x # prints the same thing
x = som...
Why did my Git repo enter a detached HEAD state?
... 9fc9555312 Merge branch 'cc/shared-index-permbits'
it cannot detached by mistake a remote tracking branch
See:
C:\Users\vonc\arepo>git checkout origin/master
Note: switching to 'origin/master'.
You are in 'detached HEAD' state. You can look around, make experimental
changes and commit th...
How to terminate the script in JavaScript?
... exit( status ) {
// http://kevin.vanzonneveld.net
// + original by: Brett Zamir (http://brettz9.blogspot.com)
// + input by: Paul
// + bugfixed by: Hyam Singer (http://www.impact-computing.com/)
// + improved by: Philip Peterson
// + bugfixed by: Brett Zamir (ht...
SQL Server NOLOCK and joins
...ll lock hints are propagated to all the tables and views that are accessed by the query plan, including tables and views referenced in a view. Also, SQL Server performs the corresponding lock consistency checks.
[SQL Server 2005]
In SQL Server 2005, all lock hints are propagated to all the tables an...
Django: How to manage development and production settings?
... use a bootstrap script or a process manager to load the correct settings (by setting the environment), or just run it from your shell before starting Django: export DJANGO_SETTINGS_MODULE=myapp.production_settings.
Note that you can run this export at any time from a shell — it does not need to ...