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Are custom elements valid HTML5?
...rocessors),
but not inferring any meaning from them."
"User agents are not free to handle non-conformant documents as they
please; the processing model described in this specification applies
to implementations regardless of the conformity of the input
documents."
"The HTMLUnknownElement interface m...
Enabling HTTPS on express.js
...
Use greenlock-express: Free SSL, Automated HTTPS
Greenlock handles certificate issuance and renewal (via Let's Encrypt) and http => https redirection, out-of-the box.
express-app.js:
var express = require('express');
var app = express();
app...
Retain cycle on `self` with blocks
... are no clean solutions, I would recommend the following workarounds. Feel free to choose one or more of them to fix your issue.
Use blocks only for completion, and not for open-ended events. For example, use blocks for methods like doSomethingAndWhenDoneExecuteThisBlock:, and not methods like set...
Difference between a virtual function and a pure virtual function [duplicate]
...(const my_class&) = default;
See this question and this one for more info on this use of delete and default.
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Add file extension to files with bash
...ut extension
check the file type
filter out only JPG files
delete filetype info
xargs run the "mv" for each file
the above command is for dry run, after it you should remove the "echo" before mv
EDIT
Some people suggesting that here is needed "Wrap path arguments in quotes; avoids argument splitt...
Does every Javascript function have to return a value?
...e as return undefined
}
Also, in JS, like in most every language, you're free to simply ignore the return value of a function, which is done an awful lot:
(function()
{
console.log('this function in an IIFE will return undefined, but we don\'t care');
}());
//this expression evaluates to:
(un...
MySQL show status - active or total connections?
...-------+
| Id | User | Host | db | Command | Time | State | Info |
+----+------+-----------------+--------+---------+------+-------+------------------+
| 3 | root | localhost | webapp | Query | 0 | NULL | show processlist |
| 5 | root | localhost:61704 | web...
Does Redis persist data?
... since last save
BGSAVE operation can only be performed if you have enough free RAM (the amount of extra RAM is equal to the size of redis DB)
N.B.: BGSAVE RAM requirement is a real problem, because redis continues to work up until there is no more RAM to run in, but it stops saving data to HDD m...
What does the plus sign do in '+new Date'
...
Just to give some more info:
If you remember, When you want to find the time difference between two Date's, you simply do as following;
var d1 = new Date("2000/01/01 00:00:00");
var d2 = new Date("2000/01/01 00:00:01"); //one second later
var ...
How to convert an int value to string in Go?
...ype of value use the corresponding formatter for example %d for int
More info - fmt
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