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How to add one day to a date? [duplicate]
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Daniel RikowskiDaniel Rikowski
64.6k5151 gold badges234234 silver badges316316 bronze badges
...
A std::map that keep track of the order of insertion?
...ny hashes are vulnerable
// to DoS attacks), pass in two randomly selected 64-bit
// integer keys. Construct with CSPRNG.
// CubicleSoft::OrderedHash<int> TempHash(47, Key1, Key2);
CubicleSoft::OrderedHashNode<int> *Node;
...
// Push() for string keys takes a pointer to the string,
// i...
Remove unwanted parts from strings in a column
...r.replace(r'\D', '').astype(int)
df.dtypes
time object
result int64
dtype: object
If you don't want to modify df in-place, use DataFrame.assign:
df2 = df.assign(result=df['result'].str.replace(r'\D', ''))
df
# Unchanged
.str.extract
Useful for extracting the substring(s) you want t...
How do I use arrays in C++?
...rray is treated as a pointer, placed
at the same address as the array. For 32-bit executable this means that the first
int value in the array, is treated as a pointer. I.e., in main.cpp the
numbers variable contains, or appears to contain, (int*)1. This causes the
program to access memory down at ve...
How to remove unreferenced blobs from my git repo
...ultiplyByZer0
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answered Feb 6 '13 at 12:06
Sam WatkinsSam Watkins
5,89733 g...
What are the differences between NP, NP-Complete and NP-Hard?
...atements of the form
(x_v11 OR x_v21 OR x_v31) AND
(x_v12 OR x_v22 OR x_v32) AND
... AND
(x_v1n OR x_v2n OR x_v3n)
where each x_vij is a boolean variable or the negation of a variable from a finite predefined list (x_1, x_2, ... x_n).
It can be shown that every NP probl...
“Unknown provider: aProvider
...
Ash ClarkeAsh Clarke
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2
...
Iteration over std::vector: unsigned vs signed index variable
...ame as unsigned int, which can lead to programming errors, particularly as 64-bit architectures become more prevalent.
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Add one row to pandas DataFrame
...Simple df2.loc[i] = ... would do. For me it reduced the time from 10s to 8.64s
– krassowski
Jan 23 '19 at 20:44
Please...
What is the best practice for dealing with passwords in git repositories?
... Git (weak solution)
Environment variables: https://stackoverflow.com/a/30664318/3070485
Config.example: https://stackoverflow.com/a/2397905/3070485
Command line parameter: manually enter password on program startup
or 2. Make repository accessible only to authorized people
I.e. people that are ...