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What does rake db:test:prepare actually do?
...it first checks for pending migrations and warns
you appropriately.
-- http://guides.rubyonrails.org/testing.html
Basically it handles cloning the database so you don't have to run the migrations against test to update the test database.
...
jQuery: Difference between position() and offset()
..., for implementing drag-and-drop), .offset() is the more useful.
Source: http://api.jquery.com/offset/
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How to capture the “virtual keyboard show/hide” event in Android?
...o framework support for that.
This is a good answer on this exact question https://stackoverflow.com/a/36259261/372076. Alternatively, here's a page giving some different approaches to achieve this pre Android 11:
https://developer.salesforce.com/docs/atlas.en-us.noversion.service_sdk_android.meta/s...
Unable to launch the IIS Express Web server
...make sure IISUrl under WebProjectProperties is configured to <IISUrl>http://localhost:XXXXX/</IISUrl> where XXXXX is your desired port.
after doing this and trying to start the app you may get
HTTP Error 500.19 - Internal Server Error
The requested page cannot be accessed because the r...
Connecting to TCP Socket from browser using javascript
...f raw sockets api in JavaScript is under-way. Have a look at these links:
http://www.w3.org/TR/raw-sockets/
https://developer.mozilla.org/en-US/docs/Web/API/TCPSocket
Chrome now has support for raw TCP and UDP sockets in its ‘experimental’ APIs. These features are only available for extension...
Free space in a CMD shell
... can alter the output by various command-line options.
You can get it from http://www.paulsadowski.com/WSH/cmdprogs.htm, http://unxutils.sourceforge.net/ or somewhere else. It's a standard unix-util like du.
df -h will show all your drive's used and available disk space. For example:
M:\>df -h
F...
How to Replace dot (.) in a string in Java
...xpath.replaceAll("\\.", "/*/"); //replaces a literal . with /*/
http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#replaceAll(java.lang.String,%20java.lang.String)
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D3.js: what is 'g' in .append(“g”) D3.js code?
...phical drawings such
as ones you would do in a powerpoint presentation.
http://tutorials.jenkov.com/svg/g-element.html
As pointed in above link: to translate you need to use translate(x,y):
The <g>-element doesn't have x and y attributes. To move the contents
of a <g>-element y...
What static analysis tools are available for C#? [closed]
...duplicate code detector that is based off the command line (but is free):
http://sourceforge.net/projects/duplo/
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Calling a function from a string in C#
...tire expression string which contains (nested!) functions, consider NCalc (http://ncalc.codeplex.com/ and nuget)
Ex. slightly modified from the project documentation:
// the expression to evaluate, e.g. from user input (like a calculator program, hint hint college students)
var exprStr = "10 + MyF...