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How do you produce a .d.ts “typings” definition file from an existing JavaScript library?
... change all the extensions to .ts.
Get-ChildItem | foreach { Rename-Item $_ $_.Name.Replace(".js", ".ts") }
Second, use the TypeScript compiler to generate definition files. There will be a bunch of compiler errors, but we can ignore those.
Get-ChildItem | foreach { tsc $_.Name }
Finally, com...
Ways to implement data versioning in MongoDB
...nt contain a dictionary of time-stamped diffs. Something like this:
{
_id : "id of address book record",
changes : {
1234567 : { "city" : "Omaha", "state" : "Nebraska" },
1234568 : { "city" : "Kansas City", "state" : "Missouri" }
}
}
To make...
How to implement the factory method pattern in C++ correctly
...ude <memory>
class FactoryReleaseOwnership{
public:
std::unique_ptr<Foo> createFooInSomeWay(){
return std::unique_ptr<Foo>(new Foo(some, args));
}
};
// Factory retains object ownership
// Thus returning a reference.
#include <boost/ptr_container/ptr_vector.hpp&...
transform object to array with lodash
...
You can do
var arr = _.values(obj);
For documentation see here.
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Python's many ways of string formatting — are the older ones (going to be) deprecated?
...0}".format(world, greeting='Hello')
and is extensible through the object.__format__() hook used to handle formatting of individual values.
Note that the old system had % and the Template class, where the latter allows you to create subclasses that add or alter its behaviour. The new-style system ...
Python list of dictionaries search
... 3.6.4, W7x64.
from random import randint
from timeit import timeit
list_dicts = []
for _ in range(1000): # number of dicts in the list
dict_tmp = {}
for i in range(10): # number of keys for each dict
dict_tmp[f"key{i}"] = randint(0,50)
list_dicts.append( dict_tmp )
d...
Remove characters except digits from string using Python?
...ion of "everything but" a few characters:
import string
class Del:
def __init__(self, keep=string.digits):
self.comp = dict((ord(c),c) for c in keep)
def __getitem__(self, k):
return self.comp.get(k)
DD = Del()
x='aaa12333bb445bb54b5b52'
x.translate(DD)
also emits '1233344554552'. ...
Android Notification Sound
... code:
Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
builder.setSound(alarmSound);
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Convert string to symbol-able in ruby
...oking at. For your example:
'Book Author Title'.parameterize.underscore.to_sym # :book_author_title
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Mac zip compress without __MACOSX folder?
... built in zip compressor in Mac OSX, it results in an extra folder titled "__MACOSX" created in the extracted zip.
13 Answe...