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Contains method for a slice
...st, but is trivial to write:
func contains(s []int, e int) bool {
for _, a := range s {
if a == e {
return true
}
}
return false
}
You can use a map if that lookup is an important part of your code, but maps have cost too.
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What's the recommended approach to resetting migration history using Django South?
...r appname/migrations/
./manage.py reset south
./manage.py convert_to_south appname
(Notice that the “reset south” part clears migration records for ALL apps, so make sure you either run the other two lines for all apps or delete selectively).
The convert_to_south call at th...
Print PHP Call Stack
...
If you want to generate a backtrace, you are looking for debug_backtrace and/or debug_print_backtrace.
The first one will, for instance, get you an array like this one (quoting the manual) :
array(2) {
[0]=>
array(4) {
["file"] => string(10) "/tmp/a.php"
["line"] => ...
Convert tuple to list and back
...
List to Tuple and back can be done as below
import ast, sys
input_str = sys.stdin.read()
input_tuple = ast.literal_eval(input_str)
l = list(input_tuple)
l.append('Python')
#print(l)
tuple_2 = tuple(l)
# Make sure to name the final tuple 'tuple_2'
print(tuple_2)
...
How to get the last N records in mongodb?
...d -1 will sort descending (newest to oldest.)
If you use the auto created _id field it has a date embedded in it ... so you can use that to order by ...
db.foo.find().sort({_id:1});
That will return back all your documents sorted from oldest to newest.
Natural Order
You can also use a Natura...
In CMake, how can I test if the compiler is Clang?
...
A reliable check is to use the CMAKE_<LANG>_COMPILER_ID variables. E.g., to check the C++ compiler:
if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
# using Clang
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
# using GCC
elseif (CMAKE_CXX_COMPILER_ID STREQ...
What is the meaning of the /dist directory in open source projects?
...en included directly).
test/: the project's tests scripts, mocks, etc.
node_modules/: includes libraries and dependencies for JS packages, used by Npm.
vendor/: includes libraries and dependencies for PHP packages, used by Composer.
bin/: files that get added to your PATH when installed.
Markdown/...
What are best practices for multi-language database design? [closed]
...relational table, so you get two tables, meaning (id) and word (id, meaning_id), the id in the word table represents the word id, the id in the meaning represents the meaning that is universal.
– Timo Huovinen
Sep 17 '18 at 19:27
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Setting WPF image source in code
...packUri = "pack://application:,,,/AssemblyName;component/Images/icon.png";
_image.Source = new ImageSourceConverter().ConvertFromString(packUri) as ImageSource;
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Can the Android drawable directory contain subdirectories?
...e Android SDK documentation, all of the examples used with the @drawable/my_image xml syntax directly address images that are stored in the res/drawable directory in my project.
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