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How do I run a node.js app as a background service?
...ly every Linux distro comes with systemd, which means forever, monit, PM2, etc are no longer necessary - your OS already handles these tasks.
Make a myapp.service file (replacing 'myapp' with your app's name, obviously):
[Unit]
Description=My app
[Service]
ExecStart=/var/www/myapp/app.js
Restart...
Entity Framework: “Store update, insert, or delete statement affected an unexpected number of rows (
... object you want to delete needs the PK set and the RowVersion Property in order to update it successfully! I was setting the rowVersion (timestamp) property, after I have attached the object to the respective DbSet, that's why it didn't work. Good job!
– Legends
...
redis-py : What's the difference between StrictRedis() and Redis()?
... to provide backwards compatibility with older versions of redis-py:
LREM: Order of 'num' and 'value' arguments reversed such that 'num' can provide a default value of zero.
ZADD: Redis specifies the 'score' argument before 'value'. These were swapped accidentally when being implemented and not disc...
How can I generate a unique ID in Python? [duplicate]
...her block and secret key. read paper on breaking PRNG algorithms
in order to be convinced that problems could occur as soon as you use random library :)
1 million id per second ?... on a Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz, you get :
>>> timeit.timeit(uniqueid,number=...
Invalid default value for 'create_date' timestamp field
...
In ubuntu desktop 16.04, I did this:
open file: /etc/mysql/mysql.conf.d/mysqld.cnf in an editor of your choice.
Look for: sql_mode, it will be somewhere under [mysqld].
and set sql_mode to the following:
NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENG...
In Ruby, is there an Array method that combines 'select' and 'map'?
...ns as its eager version. It doesn't speed anything up, it just changes the order of execution of each iteration—the last function in the chain "pulls" values as needed from the previous functions in reverse order.
– pje
Feb 13 '18 at 17:15
...
Using SASS with ASP.NET [closed]
...e sassc.exe).
NSass: a .Net wrapper.
Node-Sass: to use Libsass on Node.js.
etc.
Compass is a framework for Sass that add a lot of useful helpers (like image spriting) and can also compile your SCSS/Sass. But you need to install Ruby on each development environment where you need to compile your ...
Difference between binary tree and binary search tree
...nition ahead) each point to a binary tree.
A binary search tree (BST) or "ordered binary tree" is a type of binary tree where the nodes are arranged in order: for each node, all elements in its left subtree are less to the node (<), and all the elements in its right subtree are greater than the ...
Bootstrap 3: pull-right for col-lg only
...to create your own class with media queries. Bootstrap 3 already has float ordering for media breakpoints under Column Ordering: http://getbootstrap.com/css/#grid-column-ordering
The syntax for the class is col-<#grid-size>-(push|pull)-<#cols> where <#grid-size> is xs, sm, md or l...
Fast permutation -> number -> permutation mapping algorithms
...be very small. This can "easily" be reduced to O(nlogn) though, through an order statistics tree (pine.cs.yale.edu/pinewiki/OrderStatisticsTree), i.e. a red-black tree which initially will contains the values 0, 1, 2, ..., n-1, and each node contains the number of descendants below it. With this, on...