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How to use redis PUBLISH/SUBSCRIBE with nodejs to notify clients when data values change?
...the domain name instead of localhost (i.e. var socket = io.connect('http://my.domain.com:3000'); ) in the index.html
b) change HOST in app.js (i.e. const HOST = 'my.domain.com'; )
c) and add sockets in line 37 of app.js (i.e. 'socket.sockets.on('connection', function(client) { …' )
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Is Hash Rocket deprecated?
...ans that any time I use a symbol for a key I can search for it anywhere in my project by searching for a string that starts with a colon. To me, the lack of consistency between the actual characters used to denote the key in my_hash = {a:1} and myhash[:a] = 1 is, at the least, rather annoying. I'm...
Collections.emptyMap() vs new HashMap()
...tions.emptyMap() ? The Documentation says I can use this method if I want my collection to be immutable.
9 Answers
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What are the precise rules for when you can omit parenthesis, dots, braces, = (functions), etc.?
...ions definitions with infix style because I need a boundary for the end of my anonymous function. Also, the parameter definition of the anonymous function might be interpreted as the last parameter to the infix method.
You can use infix with multiple parameters:
string substring (start, end) map (...
CSS display: table min-height not working
...ide a spacer row (allowed to stretch vertically), while defining height on my other rows to ensure they do not and what I get is a big gap that keeps my footer where it should be. Works great in Chrome, but not FF or the PDf converter I'm using; wkhtmltopdf. Yes, height works, but doesn't mean the s...
“Use the new keyword if hiding was intended” warning
I have a warning at the bottom of my screen:
4 Answers
4
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How do I modify a MySQL column to allow NULL?
MySQL 5.0.45
6 Answers
6
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Using python map and other functional tools
...sions), but this will help you understand what map does a bit better:
def my_transform_function(input):
return [input, [1, 2, 3]]
new_list = map(my_transform, input_list)
Notice at this point, you've only done a data manipulation. Now you can print it:
for n,l in new_list:
print n, ll
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Using module 'subprocess' with timeout
...mand.run(timeout=3)
command.run(timeout=1)
The output of this snippet in my machine is:
Thread started
Process started
Process finished
Thread finished
0
Thread started
Process started
Terminating process
Thread finished
-15
where it can be seen that, in the first execution, the process
finishe...
Avoiding instanceof in Java
... if it is confined to one method and I would happily use it (probably over my own suggestion above). As you say, its quite readable, typesafe and maintainable. As always, keep it simple.
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