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node.js database [closed]
... EC2 with ease. Also, note that we are not using Mongoose. Talking about challenges (assuming you are already good at Node), you need to be good at Mongo way of doing the things (querying and aggregation ) for any serious application or service development. Learning how Mongo is different from other...
Why does Date.parse give incorrect results?
...in use for some time).
I would recommend that date strings are parsed manually and the Date constructor used with year, month and day arguments to avoid ambiguity:
// parse a date in yyyy-mm-dd format
function parseDate(input) {
let parts = input.split('-');
// new Date(year, month [, day [,...
Why is the order in dictionaries and sets arbitrary?
...der:
>>> {'bar': None, 'foo': None}
{'foo': None, 'bar': None}
All slots except 3 and 4 are empty, looping over the table first lists slot 3, then slot 4, so 'foo' is listed before 'bar'.
bar and baz, however, have hash values that are exactly 8 apart and thus map to the exact same slot...
Regular expression to get a string between two strings in Javascript
... capture inside parenthesis):
cow(.*)milk
No lookaheads are needed at all.
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How to detect if JavaScript is disabled?
...gt; to unhide (no reflow there if JS enabled). Surprisingly, this works in all modern browsers, and even in IE6
– Piskvor left the building
Jul 16 '10 at 14:31
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What's Alternative to Singleton
...singleton in the unit testing because we can test different configurations all at once.
13 Answers
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log4j vs logback [closed]
...ments the SLF4J API. This means that if you are using logback, you are actually using the SLF4J API. You could theoretically use the internals of the logback API directly for logging, but that is highly discouraged. All logback documentation and examples on loggers are written in terms of the SLF4J ...
What is better, adjacency lists or adjacency matrices for graph problems in C++?
...e of a specific edge
between any two nodes O(1)
It is slow to iterate over all edges
It is slow to add/delete a node; a complex operation O(n^2)
It is fast to add a new edge O(1)
Adjacency List
Memory usage depends on the number of edges (not number of nodes),
which might save a lot of memor...
How can I copy data from one column to another in the same table?
Is it possible to copy data from column A to column B for all records in a table in SQL?
3 Answers
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How do you count the lines of code in a Visual Studio solution?
...x", "Cyclomatic Complexity", "Depth of Inheritance", and "Class Coupling", all of which are pretty complicated to compute, and you can't run the metrics for just part of it. What this means is that if your code-base is particularly large, you might be sitting for hours waiting for it. If all you w...