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PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
... I need to limit the ability of the token to be guessed. Because uniqid is based on the time, and according to php.net "the return value is little different from microtime()", uniqid does not meet the criteria. PHP recommends using openssl_random_pseudo_bytes() instead to generate cryptographically ...
How do I install from a local cache with pip?
... using. That will be specified in the file name, like -cp27-none-linux_x86_64 for CPython 2.7 on a 64-bit Linux, etc.
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Why should a Java class implement comparable?
...aim majority of interfaces are consumed by the user's code. In larger code bases, "yourself" quickly becomes "others"
– Enno Shioji
May 2 '17 at 6:01
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What is the runtime performance cost of a Docker container?
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Here's some more benchmarks for Docker based memcached server versus host native memcached server using Twemperf benchmark tool https://github.com/twitter/twemperf with 5000 connections and 20k connection rate
Connect time overhead for docker based memcached seem...
Can you use if/else conditions in CSS?
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You could create two separate stylesheets and include one of them based on the comparison result
In one of the you can put
background-position : 150px 8px;
In the other one
background-position : 4px 8px;
I think that the only check you can perform in CSS is browser recognition:
Cond...
How to perform a mysqldump without a password prompt?
...p -u root mysql | head
-- MySQL dump 10.13 Distrib 5.6.23, for Linux (x86_64)
--
-- Host: localhost Database: mysql
-- ------------------------------------------------------
-- Server version 5.6.23
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_S...
Difference between abstraction and encapsulation?
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@Sanjeev encapsulation is concrete, abstraction is...abstract! ;-) encapsulation is an object you can use, abstraction is an ideal you can ...
Javascript calculate the day of the year (1 - 366)
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The day component is base-1. i.e. to represent January 1st of this year, you'd use new Date(2014, 0, 1), and not new Date(2014, 0, 0) as you have here. Is that intentional? Perhaps that's what accounts for being off by one day as new Date(2014...
Permission denied (publickey) when deploying heroku code. fatal: The remote end hung up unexpectedly
... This answer is what put me over the top. I am running windows 7 64 bit. There are a number of other steps that helped such as: ssh-keygen -t rsa -f id_rsa then deleting any heroku keys and adding the one just created: heroku keys:clear heroku keys:add C:\Users\username\.ssh\id_rsa...
Generate GUID in MySQL for existing Data?
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@SamBarnum because UUID is generated based on the machine and timestamp. As a query that takes milliseconds to run, they have to be very very close indeed... but never the same... a good thing to assure you, is to add an UNIQUE index to that column.
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