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Insertion Sort vs. Selection Sort
...rtion Sort is stable, as opposed to Selection Sort.
I implemented both in python, and it's worth noting how similar they are:
def insertion(data):
data_size = len(data)
current = 1
while current < data_size:
for i in range(current):
if data[current] < data[i]:...
Is there a RegExp.escape function in Javascript?
...
@Paul: Perl quotemeta (\Q), Python re.escape, PHP preg_quote, Ruby Regexp.quote...
– bobince
Oct 3 '13 at 10:24
14
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How to generate the “create table” sql statement for an existing table in postgreSQL
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Generate the create table statement for a table in postgresql from linux commandline:
This statement outputs the table create sql statement for me:
pg_dump -U your_db_user_name your_database -t your_table_name --schema-only
Explanation:
pg_dump helps us get information about the databas...
Default visibility of class methods in PHP
...Ian: I would say because "explicit is better than implicit" (as the Zen of python says). It causes other programmers to waste brain cycles wondering if the constructor is private or public or what. If people always used access modifiers the original poster might not even have asked this question.
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Git Blame Commit Statistics
...\.(cc|h|cpp|hpp|c)$' # for C/C++ files
grep -E '\.py$' # for Python files
if the files can contain spaces, which are bad for shells you can use:
git ls-tree -z --name-only -r HEAD | egrep -Z -z '\.py'|xargs -0 ... # passes newlines as '\0'
Give a list of files (through a pipe) one...
Convert number strings with commas in pandas DataFrame to float
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Not the answer you're looking for? Browse other questions tagged python pandas or ask your own question.
Neo4j - Cypher vs Gremlin query language
...out neo4django, 2, it is not applicable in all cases (e.g. language is not Python) 3, it is not the same if you write the query programmatically yourself or you use a library to create the query programmatically for you. In this respect neo4django can be considered an alternative solution to Cypher ...
JavaScript exponents
...e ES7 final specification. It is supposed to work in a similar manner with python and matlab:
a**b // will rise a to the power b
Now it is already implemented in Edge14, Chrome52, and also it is available with traceur or babel.
...
Is there any advantage of using map over unordered_map in case of trivial keys?
...e_hash_map program to time them. For example, with gcc 4.4.2 on an x86_64 Linux system
$ ./time_hash_map
TR1 UNORDERED_MAP (4 byte objects, 10000000 iterations):
map_grow 126.1 ns (27427396 hashes, 40000000 copies) 290.9 MB
map_predict/grow 67.4 ns (10000000 hashes, 40000000 ...
C# vs C - Big performance difference
...tform and use the appropriate flags when compiling the application. On the Linux or open source platforms, this is not a problem because you could distribute your source and create installation scripts that compile the code using the appropriate optimization. On the windows or closed source platform...