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Check if an element is present in an array [duplicate]
... // false
[1, 2, 3].includes(1, 2); // false (second parameter is the index position in this array at which to begin searching)
As of JULY 2018, this has been implemented in almost all major browsers, if you need to support IE a polyfill is available.
Edit: Note that this returns false if th...
How to draw vertical lines on a given plot in matplotlib?
...ignal in time representation, how to draw lines marking corresponding time index?
6 Answers
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What does “O(1) access time” mean?
...set n.
An example of O(1) would be an ArrayList accessing its element with index.
O(n) also known as Linear Order, the performance will grow linearly and in direct proportion to the size of the input data.
An example of O(n) would be an ArrayList insertion and deletion at random position. As each s...
Show constraints on tables command
...rivileges. If you need simple list of keys you can use this command:
SHOW INDEXES IN <tablename>
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How to change the default encoding to UTF-8 for Apache?
...g a hosting company and it will list the files in a directory if the file index.html is not there, it uses iso-8859-1 as the default encoding.
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How do I convert CamelCase into human-readable names in Java?
... the String.format(String format, args...) arguments. You can also call by index: String.format("%$1s|%$2s|%$3s", ...
– Mr. Polywhirl
Jan 21 '15 at 3:05
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Create a .csv file with values from a Python list
...ame(data={"col1": list_1, "col2": list_2})
df.to_csv("./file.csv", sep=',',index=False)
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How to export and import a .sql file from command line with options? [duplicate]
...riggers --routines | sed -e 's/DEFINER[ ]*=[ ]*[^*]*\*/\*/ ' | awk '{ if (index($0,"GTID_PURGED")) { getline; while (length($0) > 0) { getline; } } else { print $0 } }' | grep -iv 'set @@' | trickle -u 10240 mysql -u username -p -h localhost DATA-BASE-NAME
some issues/tips:
Error: ......not ...
How to find the sum of an array of numbers
...do know that this magic with reduce() is still 25-30% slower than a simple indexed for() loop after long years? jsperf.com/reduce-vs-loop/4
– tevemadar
Oct 29 '19 at 10:54
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Reusable library to get human readable version of file size?
...ps, using log2 to determine the size order which doubles as a shift and an index into the suffix list:
from math import log2
_suffixes = ['bytes', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB']
def file_size(size):
# determine binary order in steps of size 10
# (coerce to int, /...