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Is an anchor tag without the href attribute safe?
...;
Look for "placeholder hyperlink" on the w3c anchor tag reference page: https://www.w3.org/TR/2016/REC-html51-20161101/textlevel-semantics.html#the-a-element.
And it is also mentioned on the wiki here:
https://www.w3.org/wiki/Elements/a
A placeholder link is for cases where you want to use an ...
Add and Remove Views in Android Dynamically?
...e feature described in this question. Here is my solution and source code: https://github.com/laoyang/android-dynamic-views. And you can see the video demo in action here: http://www.youtube.com/watch?v=4HeqyG6FDhQ
Layout
Basically you'll two xml layout files:
A horizontal LinearLayout row view ...
How can I get query string values in JavaScript?
... vary, see for example this question: [Authoritative position of duplicate HTTP GET query keys](https://stackoverflow.com/questions/1746507/authoritative-position-of-duplicate-http-get-query-keys).
NOTE: The function is case-sensitive. If you prefer case-insensitive parameter name, [add 'i' modifi...
Convert RGBA PNG to RGB with PIL
...mage object
dst -- PIL RGBA Image object
The algorithm comes from http://en.wikipedia.org/wiki/Alpha_compositing
'''
# http://stackoverflow.com/a/3375291/190597
# http://stackoverflow.com/a/9166671/190597
src = np.asarray(src)
dst = np.asarray(dst)
out = np.empty(src...
How can you get the Manifest Version number from the App's (Layout) XML variables?
...urce string, and placed into the manifest by:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.somepackage"
android:versionName="@string/version" android:versionCode="20">
One could create a custom view, and place it into the XML. The view would use...
What is a columnar database?
...peration will be expensive compared to row oriented databases.
For more: https://en.wikipedia.org/wiki/Column-oriented_DBMS
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ssl_error_rx_record_too_long and Apache SSL [closed]
...port 443 is open and enabled on your server. This is the standard port for https communications.
If SSL is using a non-standard port then FireFox 3 can sometimes give this error. Ensure SSL is running on port 443.
If using Apache2 check that you are using port 443 for SSL. This can be done by se...
How do I access the $scope variable in browser's console using AngularJS?
...ing like this you have access to the angular global. You can try it here:
http://jsfiddle.net/jaimem/Yatbt/show
jQuery Lite
If you load jQuery before AngularJS, angular.element can be passed a jQuery selector. So you could inspect the scope of a controller with
angular.element('[ng-controller=ct...
ipython: print complete history (not just current session)
...ython_history.md to output the history (input and output) to a text file. (http://ipython.readthedocs.io/en/stable/interactive/magics.html#magic-history)
Then you can use the the get_session_info function to retreive the date and time for the session you are interested in.(http://ipython.readthedoc...
What are the best practices for JavaScript error handling?
...ting set of slides on Enterprise JavaScript Error Handling can be found at http://www.devhands.com/2008/10/javascript-error-handling-and-general-best-practices/
In short it summarizes:
Assume your code will fail
Log errors to the server
You, not the browser, handle errors
Identify where errors mi...