variables

Use of php variable $_ (dollar sign followed by an underscore)

由 余生长醉 提交于 2020-12-25 01:50:20
问题 Is that really true that i can use $_ as a dummy variable in foreach loop if there is no need for $value in foreach($array as $key => $value) ? I could not find any useful information that proves this except PHP syntax formatting. There's a special case for foreach loops when the value is not used inside the loop. In this case the dummy variable $_ (underscore) is used: foreach ($GLOBALS['TCA'] as $table => $_) { // Do something with $table } This is done for performance reasons, as it is

Use of php variable $_ (dollar sign followed by an underscore)

由 自闭症网瘾萝莉.ら 提交于 2020-12-25 01:49:28
问题 Is that really true that i can use $_ as a dummy variable in foreach loop if there is no need for $value in foreach($array as $key => $value) ? I could not find any useful information that proves this except PHP syntax formatting. There's a special case for foreach loops when the value is not used inside the loop. In this case the dummy variable $_ (underscore) is used: foreach ($GLOBALS['TCA'] as $table => $_) { // Do something with $table } This is done for performance reasons, as it is

Use of php variable $_ (dollar sign followed by an underscore)

由 非 Y 不嫁゛ 提交于 2020-12-25 01:49:26
问题 Is that really true that i can use $_ as a dummy variable in foreach loop if there is no need for $value in foreach($array as $key => $value) ? I could not find any useful information that proves this except PHP syntax formatting. There's a special case for foreach loops when the value is not used inside the loop. In this case the dummy variable $_ (underscore) is used: foreach ($GLOBALS['TCA'] as $table => $_) { // Do something with $table } This is done for performance reasons, as it is

Use of php variable $_ (dollar sign followed by an underscore)

由 假如想象 提交于 2020-12-25 01:49:13
问题 Is that really true that i can use $_ as a dummy variable in foreach loop if there is no need for $value in foreach($array as $key => $value) ? I could not find any useful information that proves this except PHP syntax formatting. There's a special case for foreach loops when the value is not used inside the loop. In this case the dummy variable $_ (underscore) is used: foreach ($GLOBALS['TCA'] as $table => $_) { // Do something with $table } This is done for performance reasons, as it is

Xcode快捷键

由 孤人 提交于 2020-12-19 02:48:55
其实就是设置里面的快捷键变成了文字版，费了我不少工夫。。。希望对大家有帮助 可能有些新手刚用mac，不知与windows键对应，现在说明一下，command相当于ms键盘的win键，option相当于alt，键值一样，系统偏好设置里面可以更改。 xcode相关： 关于xcode 可设 偏好设置 command+, 清空缓存 可设 隐藏xcode command+h 隐藏其它 command+option+h 显示全部 可设 退出xcode command+q 文件相关： 新建项目 command+shift+n 新建文件 command+n 新建空文件 command+control+n 打开 command+o 在新窗口中打开 command+option+o 快速打开 command+shift+d / command+shift+alt+d (不知区别是什么) 清空最近打开文件 可设 清空最近打开项目 可设 Get Info command+i 显示检查器？ command+option+i (效果和Get Info一样，不知区别) 关闭窗口 command+w 关闭所有窗口 command+option+w 关闭当前项目 command+control+w 关闭当前文件 command+shift+w 保存文件 command+s 保存所有文件 command+option

Is this shadowing a variable in F#?

由 故事扮演 提交于 2020-12-15 07:13:26
问题 let print_scene (y, v) = do Console.Clear() let y, v = int y, int v (* This is the code in question *) for j = 10 downto 0 do for i = 0 to 30 do if (y + 1) = j && i = 15 then Console.Write("b") elif j = 0 || i = 0 || j = 10 || i = 30 then Console.Write("*") else Console.Write(" ") Console.Write("\n") ignore(Console.ReadKey()) I don't understand what the int is doing in this code, what it is, or why it's there. 回答1: Indeed, this is parameter shadowing. let foo bar = let bar = bar * bar bar

Make a variable based on dataframe iterable rows which contain value from left column (2)

由 ♀尐吖头ヾ 提交于 2020-12-15 04:57:04
问题 So, thanks for your appreciation to solve the code, but i think i use your code to have run similar way dataframe, but when i run original dataframe to perform a function, the problem occurs. Here is my original dataframe [In] : df [Out]: Keterangan Q2 2019 Q2 2018 0 Kas 22686796.0 27421625.0 1 Giro pada bank indonesia 68409507.0 71159442.0 2 Giro pada bank lain 15675129.0 12584938.0 3 Giro pada bank lain pihak ketiga 88548.0 92417.0 4 Giro pada bank lain pihak berelasi 41391653.0 84668151.0

Make a variable based on dataframe iterable rows which contain value from left column (2)

由 爱⌒轻易说出口 提交于 2020-12-15 04:56:48
问题 So, thanks for your appreciation to solve the code, but i think i use your code to have run similar way dataframe, but when i run original dataframe to perform a function, the problem occurs. Here is my original dataframe [In] : df [Out]: Keterangan Q2 2019 Q2 2018 0 Kas 22686796.0 27421625.0 1 Giro pada bank indonesia 68409507.0 71159442.0 2 Giro pada bank lain 15675129.0 12584938.0 3 Giro pada bank lain pihak ketiga 88548.0 92417.0 4 Giro pada bank lain pihak berelasi 41391653.0 84668151.0

How to assign a value to a variable?

由 痴心易碎 提交于 2020-12-13 11:54:27
问题 I am wondering how to assign a value to a variable? For example I perform a simple t.test " One Sample t-test data: FirstExample t = 19.3645, df = 599, p-value < 2.2e-16 alternative hypothesis: true mean is not equal to 0 90 percent confidence interval: 0.3522468 0.4177532 sample estimates: mean of x 0.385" and I would like to assign the lower confidence interval to a variable: LowerConf= 0.3522468 Is there a way to automatically do it? 回答1: In general you assign a value exactly the way you

getting error when exporting variable in reactjs

由 被刻印的时光 ゝ 提交于 2020-12-13 07:34:14
问题 hello i have this component in react js : import React from 'react'; import './Questions.css'; const Questions = (props) => { let questions = Object.keys(props.slices).map((questionKey, i) => ( <li key={i}> <p>{props.slices[questionKey].question}</p> <div className="Answer"> <input onChange={props.selectScore(questionKey)} type="range" min="1" max="10" value={props.slices[questionKey].transform === '1' ? '10' : props.slices[questionKey].transform.replace('0.','')} className="rangeInput" style
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