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Ruby: How to get the first character of a string
How can I get the first character in a string using Ruby?
13 Answers
13
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Has anyone ever got a remote JMX JConsole to work?
...a SSH login. All Communication will be tunneled over the SSH connection.
TIP: This Solution works no matter if there is a firewall or not.
Disadvantage: Everytime you restart your java process, you will need to do all steps from 4 - 9 again.
1. You need the putty-suite for your Windows machin...
GIT clone repo across local file system in windows
...gt;/<share>/<path>
For example, if your main machine has the IP 192.168.10.51 and the computer name main, and it has a share named code which itself is a git repository, then both of the following commands should work equally:
git clone file:////main/code
git clone file:////192.168.10...
How to reset db in Django? I get a command 'reset' not found error
... edited May 14 at 12:17
Håken Lid
15.9k77 gold badges3535 silver badges5555 bronze badges
answered Aug 30 '13 at 22:06
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What's the pythonic way to use getters and setters?
...east a little bit of useful information."
– Jean-François Corbett
Mar 16 '17 at 15:11
7
How is t...
Test if string is a number in Ruby on Rails
...il 1154461.1 (±5.5%) i/s - 5788976 in 5.035311s
require 'benchmark/ips'
int = '220000'
bad_int = '22.to.2'
Benchmark.ips do |x|
x.report('cast') do
Integer(int) rescue false
end
x.report('cast fail') do
Integer(bad_int) rescue false
end
x.report('to_s') do
int.to_i....
Django's SuspiciousOperation Invalid HTTP_HOST header
... a more likely explanation is web crawlers (robots) simply crawling public IP addresses on port 80 - in which case you would want to allow them.
– markmnl
May 16 '14 at 4:12
16
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redmine开源项目管理工具介绍 - 开源 & Github - 清泛网 - 专注IT技能提升
...。
4.新建问题
要创建新建的问题，你需要有新建问题的权限。Redmine默认有三种跟踪标签，即Bug、Feature、Support。
5.问题
问题是Redmine的核心业务。一个问题绑定到一个项目，由某用户创建，可以关联到某一版本。
6.甘特图
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盘点微软历史上9大失败软件产品！ - 创意 - 清泛网 - 专注C/C++及内核技术
...他一些服务，而HailStorm则需要微软的Passport来鉴别用户的权限。这一平台推出后立即引起业界轰动，并引发有关垄断和隐私保护的担忧。微软被迫更名并推迟具体实施。其实，Hailstorm概念本质上与当前谷歌(微博)、Facebook等提供的...
程序员，你有多久没有跳出技术关注业界了？ - 创意 - 清泛网 - 专注C/C++及内核技术
...仅仅是为了做好当前这一份工作，也是为了承担更多工作权限的基础，比如架构师，只会一门语言，几种专注的技术，是不可以想像的。因为架构师更多的工作是选择和权衡，如果不多多了解和掌握 ，何来的选择和权衡。
第二...