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Create Directory When Writing To File In Node.js
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Node <= 10.11.0
You can solve this with a package like mkdirp or fs-extra. If you don't want to install a package, please see Tiago Peres França's answer below.
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Class does not implement its superclass's required members
... init, like so:
convenience required init(coder: NSCoder) {
self.init(stringParam: "", intParam: 5)
}
Note the call to an initializer in self. This allows you to only have to use dummy values for the parameters, as opposed to all non-optional properties, while avoiding throwing a fatal error....
How do I do an OR filter in a Django query?
...item.moderated = False)
(edit - I was initially unsure if this caused an extra query but @spookylukey pointed out that lazy queryset evaluation takes care of that)
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What's the difference between backtracking and depth first search?
...recursion tree.. Take any example that uses backtracking, like permuting a string of characters, there is no logical tree (no implicit tree) whatsoever regarding to the problem but we do have a recursion tree that models the incremental string building process. As for pruning, that's the pruning don...
Breakpoint on property change
... Best solution for anyone trying to debug from dev console. No extra effort to reuse on any website, awesome!
– Chris Hayes
Jul 29 at 21:16
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Java: function for arrays like PHP's join()?
I want to join a String[] with a glue string. Is there a function for this?
22 Answers
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Find the most common element in a list
...same basic idea, just expressed more simply and compactly... but, alas, an extra O(N) auxiliary space (to embody the groups' iterables to lists) and O(N squared) time (to get the L.index of every item). While premature optimization is the root of all evil in programming, deliberately picking an O(N ...
What is the difference between NULL, '\0' and 0?
... with pointers. However you may see something similar to this code:
if (!*string_pointer)
checks if the string pointer is pointing at a null character
if (*string_pointer)
checks if the string pointer is pointing at a non-null character
Don't get these confused with null pointers. Just becaus...
Rails 3: Get Random Record
...ect_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
+----+-------------+-------+------+---------------+------+---------+------+--------+---------------------------------+
| 1 | SIMPLE | users | ALL | NULL | NULL | NULL | NUL...
How to retrieve form values from HTTPPOST, dictionary or?
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@Goose, because it is magic strings. You don't get any compile time safety. Your code will fail at runtime if you make a typo in the name of the variable whereas if you are using strong typing, the compiler will be your friend.
– D...