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In android studio,cannot load 2 facets-unknown facet type:android and android-gradle
...nabled, so toggling the check-box sorted it)
Not sure if my cause was installing Flutter, but I did have to disable the Flutter plugin before I could build again.
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Ruby on Rails Callback, what is difference between :before_save and :before_create?
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You can use: before_save :generate_api_key, :if => :new_record?
– Kasper Grubbe
Nov 17 '13 at 22:09
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Location of my.cnf file on macOS
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This thread on the MySQL forum says:
By default, the OS X installation does not use a my.cnf, and MySQL just uses the default values. To set up your own my.cnf, you could just create a file straight in /etc.
OS X provides example configuration files at /usr/local/mysql/support-files/...
Declaring an enum within a class
...uct Color
{
enum Type
{
Red, Green, Black
};
Type t_;
Color(Type t) : t_(t) {}
operator Type () const {return t_;}
private:
//prevent automatic conversion for any other built-in types such as bool, int, etc
template<typename T>
operator T () const;
};
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How to count the number of files in a directory using Python
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For all kind of files, subdirectories included:
import os
list = os.listdir(dir) # dir is your directory path
number_files = len(list)
print number_files
Only files (avoiding subdirectories):
import os
onlyfiles = next(os.w...
sed or awk: delete n lines following a pattern
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how to delete all lines after the pattern is matched ? I am using sed -e '/<!--#content end--></div>/,$d' out.txt but it gives error saying : sed: -e expression #1, char 24: extra characters after command Thanks in advance.
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How to delete last item in list?
... then:
#!/usr/bin/env python
# coding: utf-8
from timer import Timer
if __name__ == '__main__':
a, record = None, []
while not a == '':
with Timer() as t: # everything in the block will be timed
a = input('Type: ')
record.append(t.elapsed_s)
# drop the last...
SQL - using alias in Group By
...ceptions though: MySQL and Postgres seem to have additional smartness that allows it.
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How to define different dependencies for different product flavors
... closures Gradle generates will not work if the flavor name starts with a capital letter.
– Jarett Millard
Jan 21 '15 at 17:44
2
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Transform DateTime into simple Date in Ruby on Rails
...irety of rails is written in Ruby, so you could probably look on the rails api to find the to_date() method. That will tell you the module it's in, which you could then include for DateTime objects in your code
– Eric Hu
Oct 19 '11 at 22:09
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