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Determine path of the executing script
...error happens when you try to execute dirname(sys.frame(1)$ofile) directly from Rstudio. It works ok when the script is executed using source("other.R"), and dirname(sys.frame(1)$ofile) is inside "other.R".
– Murta
Jul 14 '15 at 23:39
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How can I check which version of Angular I'm using?
...gularJS does not have a command line tool.
You can get the version number from the JavaScript file itself.
Header of the current angular.js:
/**
* @license AngularJS v1.0.6
* (c) 2010-2012 Google, Inc. http://angularjs.org
* License: MIT
*/
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Reload activity in Android
...imply use
finish();
startActivity(getIntent());
to refresh an Activity from within itself.
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Why do results vary based on curly brace placement?
Why do the code snippets below, taken from this article , produce different results due to only a single change in the placement of curly braces?
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How do I use Wget to download all images into a single folder, from a URL?
I am using wget to download all images from a website and it works fine but it stores the original hierarchy of the site with all the subfolders and so the images are dotted around. Is there a way so that it will just download all the images into a single folder? The syntax I'm using at the moment i...
What is the relationship between Looper, Handler and MessageQueue in Android?
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A Looper is a message handling loop: it reads and processes items from a MessageQueue. The Looper class is usually used in conjunction with a HandlerThread (a subclass of Thread).
A Handler is a utility class that facilitates interacting with a Looper—mainly by posting messages and Runna...
How to exit from the application and show the home screen?
...the app this way and after some time I click the app icon again. It starts from where I left it. That means the app was still running in the background.
– Adil Malik
Feb 12 '13 at 10:49
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How do I set/unset a cookie with jQuery?
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from the changelog: "$.removeCookie('foo') for deleting a cookie, using $.cookie('foo', null) is now deprecated"
– bogdan
Jan 7 '13 at 3:57
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How do I convert a String to an int in Java?
... do something else if you like.)
Alternatively, you can use an Ints method from the Guava library, which in combination with Java 8's Optional, makes for a powerful and concise way to convert a string into an int:
import com.google.common.primitives.Ints;
int foo = Optional.ofNullable(myString)
.m...
How to upgrade Git on Windows to the latest version?
I just upgraded to Git 1.8.0.1 for Windows, from my previous version 1.7.9.mysysgit.0. I downloaded the new version from the Git site and installed through the normal Git installer EXE.
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