当我们调用此命令时rails runner test.rb -e production,我们看到此错误:
test.rb:2:in `<top (required)>': undefined local variable or method `hello' for main:Object (NameError)
from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.2.12/lib/rails/commands/runner.rb:51:in `eval'
from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.2.12/lib/rails/commands/runner.rb:51:in `<top (required)>'
from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.2.12/lib/rails/commands.rb:64:in `require'
from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.2.12/lib/rails/commands.rb:64:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
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test.rb的内容:
hello
def hello
puts "hi"
end
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为什么会这样?我们在Rails 3.2.12上.
我们在JavaScript中编写了一个小脚本来查找重复项或潜在的重复项.这个剧本有时会起作用,但是对于像"网球"这样的词语,它会神秘地失败.我们正在使用jQuery.
脚步:
1)点击这里的JSFiddle演示:http://jsfiddle.net/6Hgex/.
2)单击" 检查Dupes".
3)在重复单词部分下,单词网球应列出两个条目,一个用于观看网球比赛,一个用于网球比赛.但是,由于某些原因,在检查服务网球短语时正则表达式失败- 除非我们使用Chrome开发者工具替换变量和硬编码值.当我们使用断点时,所有值看起来都是正确的,但RegEx对于这个短语失败了.
我们做错了什么?
谢谢!
JavaScript的:
// Init page
$( document ).ready( function() {
init();
});
function init() {
$( '#box .button.dupe_clues' ).on( 'mousedown', function() {
var dupe_words_list = $( '.list.dupe_words' );
dupe_words_list.empty();
var dupe_words = ['tennis'];
var unique_clues = ['watching tennis match', 'serving tennis ball'];
$( dupe_words ).each( function() {
var highlighted_clues = highlight_dupe_word( unique_clues, this );
dupe_words_list.append( '<div>' + …Run Code Online (Sandbox Code Playgroud) 是否可以从cron作业调用ActionMailer?我们正在使用Rails 3.
理想情况下,cron作业会触发脚本从数据库中读取用户,将这些用户和一些变量传递给ActionMailer类以触发电子邮件.
这在Rails 3.2.12中是否可行?
下面的代码生成一个 Computed property must have an explicit type error.
使用新的try/catchSwift 语法列出文件的正确方法是什么?
do {
let files = try NSFileManager.defaultManager().contentsOfDirectoryAtPath(docsPath as String) as! [String] {
print("Found \(files.count) file(s) in \(docsPath):")
}catch{
print("Error with listing files: \(error)")
}
Run Code Online (Sandbox Code Playgroud) 以下代码是从另一个 SO 答案中提取的,但是是否可以延迟该CAKeyframeAnimation动画的开始,类似于 UIViewanimateWithDuration提供delay属性的方式?
根据类文档,该类CAKeyframeAnimation似乎不包含延迟属性。
let animation = CAKeyframeAnimation(keyPath: "transform.translation.x")
animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
animation.duration = 1.0
animation.repeatCount = 2
animation.values = [-10, 10, -10, 10, -5, 5, -2, 2, 0]
view.layer.addAnimation(animation, forKey: "shake")
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