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Adding a Method to an Existing Object Instance
I've read that it is possible to add a method to an existing object (i.e., not in the class definition) in Python.
16 Answ...
lexers vs parsers
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What parsers and lexers have in common:
They read symbols of some alphabet from their input.
Hint: The alphabet doesn't necessarily have to be of letters. But it
has to be of symbols which are atomic for the language
understood by parser/lexer.
Symbols for the lexer: ...
Explain the use of a bit vector for determining if all characters are unique
...ify the size in constructor.
API. With bit vectors you will have easier to read code, probably something like this:
vector.SetFlag(4, true); // set flag at index 4 as true
for int you will have lower-level bit logic code:
checker |= (1 << 5); // set flag at index 5 to true
Also probably i...
How to get the input from the Tkinter Text Widget?
..._Box.get("1.0",END)
The first part, "1.0" means that the input should be read from line one, character zero (ie: the very first character). END is an imported constant which is set to the string "end". The END part means to read until the end of the text box is reached. The only issue with this is...
Save the console.log in Chrome to a file
...ves the clipboard as a .json file and opens in Visual Studio which is very readable. The only change is I do JSON.stringify(temp1, null, 2) to make it easier to read. The trick below to save the console works well as well.
– Wade Hatler
Dec 20 '18 at 1:33
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How do I get the AM/PM value from a DateTime?
...lization.CultureInfo("en-US") in order to get this right (if you are not already running the thread in a US context)
– thomas
Jun 24 '15 at 11:06
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MySQL: @variable vs. variable. What's the difference?
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@Pacerier: Am I reading the docs wrong? """To indicate explicitly that a variable is a session variable, precede its name by SESSION, @@session., or @@."""
– RobM
Apr 25 '15 at 16:32
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How do I get a list of all the duplicate items using pandas in python?
... IDs in duplicated:
>>> import pandas as pd
>>> df = pd.read_csv("dup.csv")
>>> ids = df["ID"]
>>> df[ids.isin(ids[ids.duplicated()])].sort("ID")
ID ENROLLMENT_DATE TRAINER_MANAGING TRAINER_OPERATOR FIRST_VISIT_DATE
24 11795 27-Feb-12 ...
When to use static vs instantiated classes
...believe is the overly-complicated sounding term for this. LOTS and lots of reading on it all over SO and google-land. As far as "singletons" go, here is something that really made me think: slideshare.net/go_oh/… A talk on why PHP singletons really don't make any sense. Hope this contributes a lit...
Profiling Django
...ime they take. It's a really useful, powerful and easy to use tool.
Also, read recommendations about Django performance in Database access optimization from the documentation.
And Django performance tips by
Jacob Kaplan-Moss.
...