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What exactly is Heroku?
I just started learning Ruby on rails and I was wondering what Heroku really is? I know that its a cloud that helps us to avoid using servers? When do we actually use it?
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How do I retrieve the number of columns in a Pandas data frame?
How do you programmatically retrieve the number of columns in a pandas dataframe? I was hoping for something like:
6 Answer...
How do I get the path of the current executed file in Python?
...always loaded from a file. If you create a module with the following code and put it in the same directory as your main script, then the main script can import the module and use that to locate itself.
some_path/module_locator.py:
def we_are_frozen():
# All of the modules are built-in to the ...
Does deleting a branch in git remove it from the history?
... source tree, it is a very different structure from svn where all branches and tags (by convention) live in separate 'folders' of the repository alongside the special 'trunk'.
If the branch was merged into another branch before it was deleted then all of the commits will still be reachable from the...
Are Roslyn SyntaxNodes reused?
I've been taking a look to Roslyn CTP and, while it solves a similar problem to the Expression tree API , both are immutable but Roslyn does so in a quite different way:
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Adding local .aar files to Gradle build using “flatDirs” is not working
...tions (under edit) (File -> New-> New Module -> Import .JAR/.AAR) and import your .AAR.
Then in your project build.gradle (not the top level one, the one under 'app') add the following (in the dependencies section):
dependencies {
compile project(':Name-Of-Your-Project')
}
Note Nam...
Given a view, how do I get its viewController?
...r, because that would break MVC principles.
The controller, on the other hand, knows which view it's responsible for (self.view = myView), and usually, this view delegates methods/events for handling to the controller.
Typically, instead of a pointer to your view, you should have a pointer to your...
Removing duplicate rows from table in Oracle
I'm testing something in Oracle and populated a table with some sample data, but in the process I accidentally loaded duplicate records, so now I can't create a primary key using some of the columns.
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Disable Rails SQL logging in console
Is there a way to disable SQL query logging when I'm executing commands in the console? Ideally, it would be great if I can just disable it and re-enable it with a command in the console.
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What's the difference between IEquatable and just overriding Object.Equals()?
...s equal to another instance of Food . I will later use it against a List, and I want to use its List.Contains() method. Should I implement IEquatable<Food> or just override Object.Equals() ? From MSDN:
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