The -f is actually required because of the rebase. Whenever you do a rebase you would need to do a force push because the remote branch cannot be fast-forwarded to your commit. You’d always want to make sure that you do a pull before pushing, but if you don’t like to force push to master or dev for that matter, … Read more
Each YouTube video has four generated images. They are predictably formatted as follows: The first one in the list is a full size image and others are thumbnail images. The default thumbnail image (i.e., one of 1.jpg, 2.jpg, 3.jpg) is: For the high quality version of the thumbnail use a URL similar to this: There is also a … Read more
This is the problem: You are redefining what str() means. str is the built-in Python name of the string type, and you don’t want to change it. Use a different name for the local variable, and remove the global statement.
The or and and python statements require truth-values. For pandas these are considered ambiguous so you should use “bitwise” | (or) or & (and) operations: These are overloaded for these kind of datastructures to yield the element-wise or (or and). Just to add some more explanation to this statement: The exception is thrown when you want to get the bool of a pandas.Series: What you hit was a place where the operator implicitly converted … Read more
This error occurs when you’re trying to cast into an integer something that isn’t just one scalar. For instance, a ndarray with two elements. This is an example of this error: TypeError: only size-1 arrays can be converted to Python scalars What you can do is use .astype(int)
First you need to download JQuery library from http://jquery.com/ then load the jquery library the following way within your html head tags then you can test whether the jquery is working by coding your jquery code after the jquery loading script If you want to use your jquery scripts file seperately you must define the external .js … Read more
You can use Character.toString(char). Note that this method simply returns a call to String.valueOf(char), which also works. As others have noted, string concatenation works as a shortcut as well: But this compiles down to: which is less efficient because the StringBuilder is backed by a char[] (over-allocated by StringBuilder() to 16), only for that array to be defensively copied by the resulting String. String.valueOf(char) “gets in … Read more
Arguments are passed by assignment. The rationale behind this is twofold: the parameter passed in is actually a reference to an object (but the reference is passed by value) some data types are mutable, but others aren’t So: If you pass a mutable object into a method, the method gets a reference to that same object and you can mutate … Read more
As others have pointed out, due to not using understandable variable names, it is almost impossible to debug your code. Following the wiki article about Dijkstra’s algorithm, one can implement it along these lines (and in a million other manners): This code is more verbous than necessary and I hope comparing your code with mine … Read more
Reference: Data Structures > More on Lists Caveats follow Note that while this is perhaps the cleanest way to answer the question as asked, index is a rather weak component of the list API, and I can’t remember the last time I used it in anger. It’s been pointed out to me in the comments that because this answer is heavily … Read more