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How to make lists contain only distinct element in Python? [duplicate]
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@Ant Dictionary key order is preserved from Python 3.6, but it says "the order-preserving aspect of this new implementation is considered an implementation detail and should not be relied upon". Since they're both based on hashes, I'd think set would be the same, ...
Best practice for Python assert
...wn Exception classes.
For example, if you're writing a function to read from a configuration file into a dict, improper formatting in the file should raise a ConfigurationSyntaxError, while you can assert that you're not about to return None.
In your example, if x is a value set via a user int...
What does $@ mean in a shell script?
...er enclosed in double quotes, allowing to take parameters with blank space from the caller and pass them on.
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Remove substring from the string
I am just wondering if there is any method to remove string from another string?
Something like this:
10 Answers
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Unloading classes in java?
...loader so that a desktop application can dynamically start loading classes from an AppServer I need to talk to. We did this since the amount of jars that are required to do this are ridiculous (if we wanted to ship them). We also have version problems if we don't load the classes dynamically at run ...
What is the difference between map and flatMap and a good use case for each?
...rms an RDD of length N into another RDD of length N.
For example, it maps from two lines into two line-lengths:
rdd.map(_.length).collect
res1: Array[Int] = Array(13, 16)
But flatMap (loosely speaking) transforms an RDD of length N into a collection of N collections, then flattens these int...
How to delete a column from a table in MySQL
...OP, ADD and ALTER multiple columns on the same table in the one statement. From the MySQL reference manual:
You can issue multiple ADD, ALTER, DROP, and CHANGE clauses in a single ALTER TABLE statement, separated by commas. This is a MySQL extension to standard SQL, which permits only one of eac...
What is __main__.py?
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You'll have to decide for yourself whether your application could benefit from being executed like this.
Note that a __main__ module usually doesn't come from a __main__.py file. It can, but it usually doesn't. When you run a script like python my_program.py, the script will run as the __main__ ...
Resetting remote to a certain commit
... There's a nice explanation of your options for doing this in this answer from Jakub Narębski. Which one is most convenient depends on how many commits you want to revert, and which method makes most sense to you.
Since from your question it's clear that you have already used git reset --hard to...
Can I do a synchronous request with volley?
...'t understand. It sits until a notify will be called and it will be called from UI thread. Until you have two different thread I can't see the deadlock
– greywolf82
May 17 '15 at 14:58
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