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Using regular expressions to parse HTML: why not?
...ossible with regular expressions, since it depends on matching the opening and the closing tag which is not possible with regexps.
Regular expressions can only match regular languages but HTML is a context-free language and not a regular language (As @StefanPochmann pointed out, regular languages a...
How do I check CPU and Memory Usage in Java?
I need to check CPU and memory usage for the server in java, anyone know how it could be done?
15 Answers
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Socket.IO - how do I get a list of connected sockets/clients?
...ion ONLY works with version prior to 1.0
UPDATED 2020 Mar 06
From 1.x and above, please refer to this link: getting how many people are in a chat room in socket.io
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How to use mysql JOIN without ON condition?
Is it possible to write join query without ON statement? and how do these joins differ LEFT JOIN, RIGHT JOIN works.
2 A...
Redirecting Output from within Batch file
I am creating a batch file with some simple commands to gather information from a system. The batch file contains commands to get the time, IP information, users, etc.
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git: How to ignore all present untracked files?
Is there a handy way to ignore all untracked files and folders in a git repository?
(I know about the .gitignore .)
8 An...
Create an empty list in python with certain size
...n do this to initialize a list with values from 0 to 9:
lst = range(10)
And in Python 3.x:
lst = list(range(10))
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How to find first element of array matching a boolean condition in JavaScript?
...for arrays; this stops enumerating the array once it finds the first match and returns the value.
const result = someArray.find(isNotNullNorUndefined);
Old answer:
I have to post an answer to stop these filter suggestions :-)
since there are so many functional-style array methods in ECMAScript, p...
Python - List of unique dictionaries
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If you need all values considered and not just the ID you can use list({str(i):i for i in L}.values()) Here we use str(i) to create a unique string that represents the dictionary which is used to filter the duplicates.
– DelboyJay
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How to change the order of DataFrame columns?
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incase you get "cannot concatenate 'str' and 'list' objects" make sure you [] the str value in cols: cols = [cols[7]] + cols[:7] + cols[8:]
– moeabdol
Jan 9 '15 at 16:59
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