Are you running msysgit, or some other form of Windows git installation? msysgit is only one possible way to run git on Windows but it’s probably also the simplest one. It’s also the way recommended by the git website at http://git-scm.org/ . If you are using msysgit, then you need to run the command in … Read more
[value for key, value in programs.items() if ‘new york’ in key.lower()]
Foreign keys work by joining a column to a unique key in another table, and that unique key must be defined as some form of unique index, be it the primary key, or some other unique index. At the moment, the only unique index you have is a compound one on ISBN, Title which is … Read more
Two keys will be used when we need to sort a list with two constraints: one in ascending order and the other in descending, in the same list or any In your example, sortedList = sorted(myList, key = lambda y: (y[0].lower(), y[1])) you can sort entire list only in one order. You can try these … Read more
I believe to check if a key exists in a hash you just do if (exists $strings{$string}) { … } else { … }
This answer is obsolete : the dropDups option was removed in MongoDB 3.0, so a different approach will be required in most cases. For example, you could use aggregation as suggested on: MongoDB duplicate documents even after adding unique key. If you are certain that the source_references.key identifies duplicate records, you can ensure a unique index … Read more
I had the same problem and I figured there wasn’t any helpful answer around on the internet so hoping this should help everyone in the future. When using GoogleMaps for Android, you need two keys – debug and release. The “debug” key is kind of a misleading term. This key is also to be used … Read more
Yes, in fact, std::map::erase() returns a size_type which indicates the number of keys erased. Thus it returns 0 for nothing erased and 1 for something erased for a map.
You were close, try the snippet below: >>> my_dict = { … “keyA”: 1, … “keyB”: 2, … “keyC”: 3 … } >>> invalid = {“keyA”, “keyB”} >>> def without_keys(d, keys): … return {x: d[x] for x in d if x not in keys} >>> without_keys(my_dict, invalid) {‘keyC’: 3} Basically, the if k not in … Read more
var usdKey = curr.keys.firstWhere( (k) => curr[k] == ‘USD’, orElse: () => null);