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How to close activity and go back to previous activity in android
...Y_REQUEST_CODE);
Inside your called activity you can then get the Intent from the onCreate() parameter or used
getIntent();
To set return a result to activity one then in activity two do
setResult(Activity.RESULT_OK, MyIntentToReturn);
If you have no intent to return then just say
setResult...
Convert integer into its character equivalent, where 0 => a, 1 => b, etc
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Assuming you want lower case letters:
var chr = String.fromCharCode(97 + n); // where n is 0, 1, 2 ...
97 is the ASCII code for lower case 'a'. If you want uppercase letters, replace 97 with 65 (uppercase 'A'). Note that if n > 25, you will get out of the range of letters.
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Creating threads - Task.Factory.StartNew vs new Thread()
... the thread pool or execute it synchronously. The TPL is about freeing you from managing the threads/concurrency yourself and using the best for your platform (like utilizing cores)
– sanosdole
Oct 25 '11 at 13:21
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Convert JSON string to dict using Python
...sn't, thanks a lot @Hussain for saving me a time, FYI, I'm trying to loads from dynamic strings with utf-8 encoding...
– Mohammed Sufian
Jul 27 '19 at 13:11
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Rails 3 - can't install pg gem
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As a note, the binary package from the Postgres site does not contain development headers or the pg_config program.
– tadman
Mar 12 '12 at 15:43
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How do I combine a background-image and CSS3 gradient on the same element?
...TH-TO-IMG') center center no-repeat, -webkit-gradient(linear, 0 0, 0 100%, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+
background: url('PATH-TO-IMG') center center no-repeat, -webkit-linear-gradient(top, @startColor, @endColor); // Safari 5.1+, Chrome 10+
background: url('PATH-TO-IMG'...
What are the git concepts of HEAD, master, origin?
...sh to that branch, I type "git push origin featureA". I can pull the same from the remote as well by saying "git pull origin featureA", make changes. And head is only referring to local copy. @OK999 I believe HEAD is pointing to whichever branch you are checked out at the moment in the local. If...
How to delete a cookie?
...Here is an implementation of a delete cookie function with unicode support from Mozilla:
function removeItem(sKey, sPath, sDomain) {
document.cookie = encodeURIComponent(sKey) +
"=; expires=Thu, 01 Jan 1970 00:00:00 GMT" +
(sDomain ? "; domain=" + sDomain :...
How to return an empty ActiveRecord relation?
...ils 4
In Rails 4, a chainable ActiveRecord::NullRelation will be returned from calls like Post.none.
Neither it, nor chained methods, will generate queries to the database.
According to the comments:
The returned ActiveRecord::NullRelation inherits from
Relation and implements the Null Obje...
Tutorials and libraries for OpenGL-ES games on Android [closed]
...com. Now that is no longer a problem I have removed the confusing comment, from my post. Thx for the feedback. Droidnova and the red book are problably the two main sites at which I should do my reading.
– arberg
Mar 18 '10 at 10:42
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