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Difference between HashSet and HashMap?
...as others have pointed out. What they are, respectively, are a Set - an unordered collection - and a Map - a collection with keyed access. They happen to be implemented with hashes - that's where the names come from - but their essence is hidden behind that part of their names.
Don't be confused ...
How to paginate with Mongoose in Node.js?
...mongodb, but to answer Lex's question, it appears that, as the results are ordered by '-createdOn', you would replace the value of request.createdOnBefore with the least value of createdOn returned in the previous result set, and then requery.
– Terry Lewis
Aug...
How does one get started with procedural generation?
...eneration techniques have been used to:
simulate the growth of cities in order to plan for traffic management
to simulate the growth of blood vessels
SpeedTree is used in movies and architectural presentations
share
...
Is there an exponent operator in C#?
...em with this method though is that the exponent is calculated in the wrong order compared to other operators. This can be avoided by always putting an extra ( ) around the operation which again makes it a bit harder to read the equations:
DoubleX a = 2;
DoubleX b = 3;
Console.WriteLine($"a = {a}, b...
How to have a transparent ImageButton: Android
...d ripple effect, use android:background="?android:selectableItemBackgroundBorderless"
– Mateus Gondim
Aug 2 '17 at 15:27
8
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Check if object is a jQuery object
...p;& obj instanceof jQuery since jQuery does not have to be declared in order for the typeof operator to work without throwing an error.
– Patrick Roberts
Aug 17 '15 at 19:05
...
How can I add timestamp to logs using Node.js library Winston?
...ou include Winston, it usually defaults to adding a Console transport. In order to get timestamps to work in this default case, I needed to either:
Remove the console transport and add again with the timestamp option.
Create your own Logger object with the timestamp option set to true.
The firs...
Appending the same string to a list of strings in Python
... 0 prepended to each word, followed by
the n-1 bit code in reverse order, with 1 prepended to each word.
'''
def graycode(n):
if n==1:
return ['0','1']
else:
nbit=map(lambda x:'0'+x,graycode(n-1))+map(lambda x:'1'+x,graycode(n-1)[::-1])
...
How to configure port for a Spring Boot application
...ySource implementations and/or processors wired into Environment object in order), you can set any property outside of your jar archive through following methods:
Pass property through command line argument as application argument
java -jar <path/to/my/jar> --server.port=7788
From property...
Bootstrap table without stripe / borders
...
The border styling is set on the td elements.
html:
<table class='table borderless'>
css:
.borderless td, .borderless th {
border: none;
}
Update: Since Bootstrap 4.1 you can use .table-borderless to remove the bo...