Recent questions in Technique[技术]

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这个容易理解 debian8@debian:~$ printf "%-5s " "hah" hah 这个呢？ --> n debian8@debian:~$ printf "%-5s\n" "hah" hah 按照上面的逻辑如 ... :~$ printf "%-5s\\\n" "hah" hah 请解释一下，bash的这种行为？...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wepack 打包react-router history 问题

用wepack 打包react-route的项目如果想设置history 为browserHistory 是不是一定要开server 那项目要上线的时候咋办或者有别的解决方法刚上手react求解...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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406 views

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vue通过props传递对象会报错

父组件App.vue 子组件sonCp.vue 数据结构报错但是数据能渲染上去求解，顺便帮我看一下我取数据方式对么，是放到created这个里面么...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Structuring html templates to fix sourcing cdns

Im trying to use DataTables in my extended html file. Ive trialed it all on a blank html file (no base template) and it ... be great as I don't seem to be having much luck! Thanks...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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404 views

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js内存泄漏问题

var user = { name: 'tom', age: 20, gender: 'male' } var test = document.getElementById('test'); test.onclick = function() { test.innerHTML = ... 有没有内存泄漏，如果有的话麻烦大神指出为什么，并且如何消除内存泄漏...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Excel VBA search

Am starting a new project and new to excel VBA, i need help trying to search for specific number through entire worksheet ... Loop End If End With Set Loc = Nothing Next End Sub...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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372 views

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用vue 写的组件ios渲染不出来

navbar:vue实现 `<template> <div class="container" :style="{height:height+'px', backgroundColor:backgroundColor}" :data-role="dataRole"> <div ... 生产的二维码 android可以正常跑，ios死活渲染不出来，这是啥情况...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How do I fix error on paging using Datatables and server side data source?

I'm using the datatables framework described here: https://datatables.net/examples/server_side/simple.html I'm able to get the example ... ", "29th Mar 12", "$433,060" ] ] }...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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flutter - InAppWebView - inject text in the html

I am using flutter_inappwebview. I need to insert text into the content of the page loaded with the initialUrl. I don't want ... user opens via a button widget. How can I do this?...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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579 views

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assembly - Unable to get mov ax,3 int 33h to work in graphics mode

I'm trying to draw a rectangle in graphics mode (13h) and check whether it was clicked at any ... dx checkDifference dx, y, height JNG whilePlatformBeingDrawn endm drawPlatform...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Simplest example of using Angular 8 to convert http.get observable to string

I am using Angular to access values in Mongo through Express. I seem to be getting the correct ... Incorporating the suggestion from Andrei alleviated a confounding issue....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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471 views

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node.js - How to add a watermark to video on firebase storage using firebase functions and ffmpeg

I am trying to add a watermark to a video using firebase functions and ffmpeg, but I do know the right code for it. I know is that ... }) }).catch(err=>{ console.log(err); }); })...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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输出在html标签之间能否导致XSS

输出的内容在<span>内容</span>，将< > & 符号变为了实体字符（< > &）。问有什么方法到达XSS...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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434 views

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ios - How can I speed up displaying bitmap graphics with Swift and an image buffer?

I've been working on an open source 2d bitmap renderer for iOS to study different computer graphics and pixel ... recommend any texts/papers to help correct my misunderstandings?...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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279 views

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thinkphp的循环问题

我想取到这个time,不知道该什么循环出来，大神们帮帮忙谢谢...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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481 views

1 answer

Spring Mvc全局异常处理器@ControllerAdvice不起作用？

so上面一个类似的问题自定义了一个全局的异常处理器： @ControllerAdvice public class ErrorController { @ExceptionHandler public ModelAndView exceptionHandler( ... <mvc:annotation-driven/> 请问出错的原因可能有哪些？...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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471 views

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在nodejs的程序里面怎么理解IO呢，如何用一段代码来说明IO

在nodejs的程序里面怎么理解IO呢，如何用一段代码来说明IO，看了很多文章大部分都只说原理层面，I是input，O是output，但在nodejs的代码层面怎么理解这个IO呢，求大家赐教啊，写了很多代码了，但是每每思考这 ... .log('end') }); console.log('doing') 可能这段代码呢不能解释IO希望大家解惑赐教啊...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer

laravel从数据库中读取多个字段在视图中显示，如果字段为空则不显示，每个字段都加一个if判断吗？

laravel从数据库中读取多个字段在视图中显示，如果字段为空则不显示，每个字段都加一个if判断吗？像下面这样： @if ($user->name!=null) <div>姓名：$user->name</div> ... @if ($user->phone!=null) <div>电话：$user->phone</div> @endif 有没有其他写法？...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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610 views

1 answer

regex - How to remove everything but certain words in string variable (Stata)?

I have a string variable response, which contains text as well as categories that have already been coded (categories ... it work, or should I approach the problem differently?...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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求问怎么解析这段json数据

为什么我用ajax data.SERVERPARTObject 显示的是undefined...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Executing multi-line statements in the one-line command-line?

I'm using Python with -c to execute a one-liner loop, i.e.: $ python -c "for r in range(10): print 'rob'" This ... have this as a one-liner so that I can include it in a Makefile....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer

thinkphp怎么将多维数组变成一维数组？

Array ( [0] => Array ( [user_id] => 1 ) [1] => Array ( [user_id] => 22 ) ) 我只想要 1和22 怎么变成$a=array('1','22');...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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463 views

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prolog - changing list of strings to atoms using maplist?

How to change string to atoms using maplist. This does not work : ?- maplist(atom_string,["a","b","c"]). first because atom_string/2 has ... = Y^X^atom_string(X, Y), L = [a, b, c]....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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369 views

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php获取倒计时

我用js写出了一个20秒倒计时，然后我想问一下php有没有办法获取某一刻的秒数，然后存到数据库里面！...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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193 views

1 answer

javascript - Vuejs return data from component to Laravel

I am trying to make a search bar to collect a list of products which the user will then be able to select an ... by finding all the elements which are being displayed? Many thanks....

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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362 views

1 answer

WPF显示HTML会报js的错误，如何去掉这个呢？

我只想让它显示一下HTML...

asked Feb 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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585 views

1 answer

msys2 - How to check if my program is running on MinGW(or MSYS) shell, or on CMD?

I use MinGW or MSYS to develop my program, I want to make my program behave slightly differently when running on MinGW(or MSYS) ... to know if there is any way to do so? Thanks!...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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godot - What does func _physics_process(delta), move_and_slide(), Vector2() and do in gdscript?

I'm just started learning to program because I want to learn how to make a game. I choose the Godot engine to start ... so could you please tell me what the above things even do?...

asked Feb 5, 2021 in Technique[技术] by 深蓝 (71.8m points)

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