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Remove all the elements that occur in one list from another
...ion itself is quite efficient (although a generator comprehension might be more efficient by not duplicating elements in memory), but the in operator isn't that efficient on a list. in on a list is O(n), whereas in on a set is O(1). However, until you get to thousands of elements or more, you're u...
What is the “->” PHP operator called and how do you say it when reading code out loud? [closed]
...s listed in that article as T_DOUBLE_COLON. I'll +1 to you when I get some more votes :)
– Billy ONeal
Apr 6 '10 at 20:52
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Is JavaScript an untyped language?
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How do I run a terminal inside of Vim?
... in terminal that can be opened with the :term command. This provides much more complete integration with the rest of the Vim features.
I would definitely recommend screen for something like this. Vim is a text editor, not a shell.
I would use Ctrl+AS to split the current window horizontally, or i...
Double decimal formatting in Java
... Optionally u might want to add another separator for digits more than 3 before the comma then use the following NumberFormat formatter = new DecimalFormat("#,000.00"); System.out.println(formatter.format(4.0));
– Jose Mhlanga
Aug 27 at 7:01
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How to “EXPIRE” the “HSET” child key in redis?
...se. This allows all those keys to fall in the same hash slot. You can read more about it here: https://redis.io/topics/cluster-tutorial
Now if we want to do the same operation of hashes, we could do:
HDEL hash_top_key child_key_1 => DEL {hash_top_key}child_key_1
HGET hash_top_key child_key_1 =...
Relational table naming convention [closed]
...ship is implemented in SQL as a CONSTRAINT FOREIGN KEY in the child table (more, later). Here is the Verb Phrase (in the model), the Predicate that it represents (to be read from the model), and the FK Constraint Name:
Initiates
Each Customer Initiates 0-to-n SalesOrders
Customer_Initi...
Which HTML5 reset CSS do you use and why? [closed]
...TML5 reset CSS do you use and why? Is there one that you've found to cover more cases?
8 Answers
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Check if user is using IE
... the indexOf() function returns -1 not 0. Hence if (msie > -1) would be more explanatory.
– Neville Nazerane
Mar 10 '14 at 12:19
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How to recursively download a folder via FTP on Linux [closed]
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