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Rails migrations: self.up and self.down versus change
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For many operations rails can guess what is the inverse operation (without problems). For example, in your case what is the reverse operation of add_column to call when you rollback? Of course it's remove_column. What is the inverse of create_table? I...
Nginx not picking up site in sites-enabled?
...rch I have not figured out why this doesn't work! I am trying to move my localhost to my sites-enabled folder which is in /etc/nginx/sites-enabled/default.
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Should I use encoding declaration in Python 3?
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Because the default is UTF-8, you only need to use that declaration when you deviate from the default, or if you rely on other tools (like your IDE or text editor) to make use of that information.
In other words, as far as Pyt...
Is it possible for intellij to organize imports the same way as in Eclipse?
...ich eclipse imports is: Java, Javax, Org, Com, everything else in alphabetical order. Is it possible to configure IDEA to follow these rules?
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PHP: Count a stdClass object
...(unless it's a custom object that implements the Countable interface). Try casting the object, like below, as an array and seeing if that helps.
$total = count((array)$obj);
Simply casting an object as an array won't always work but being a simple stdClass object it should get the job done here.
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When annotating a class with @Component, does this mean it is a Spring Bean and Singleton?
... for these annotations to be detected, you need to place this line in applicationContext.xml:
<context:component-scan base-package="com.yourcompany" />
About singletons - spring beans are all in singleton scope by default. The only thing you have to have in mind is that you should not store...
Enable zooming/pinch on UIWebView
I have an UIWebView with a pdf-file. It works fine. But how can i enable zooming on the pdf-file?
6 Answers
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Twig: in_array or similar possible within if statement?
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You can also use defined : {% if someOtherArray.myVar is defined %} (twig.sensiolabs.org/doc/tests/defined.html)
– tight
Jun 15 '14 at 18:01
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Mocking a class: Mock() or patch()?
...ay that allows you to control the usage of the class in functions that you call. Once you patch a class, references to the class are completely replaced by the mock instance.
mock.patch is usually used when you are testing something that creates a new instance of a class inside of the test. mock....
How to compare two files not in repo using git
... doesn't matter which one is tracked by git and which is not - one or both can be untracked, eg:
$ date > x
$ sleep 2
$ date > y
$ git diff --color-words --no-index x y
diff --git a/x b/y
index 6b10c7c..70f036c 100644
--- a/x
+++ a/y
@@ -1 + 1 @@
Wed Jun 10 10:57:45|10:57:47 EDT 2013
The co...