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821 views

1 answer

batch-file - 如何在批处理文件中使用if - else结构？(How to use if - else structure in a batch file?)

I have a question about if - else structure in a batch file. (我有一个关于if - else批处理文件中的结构的问题 )Each ... " rd /s /q "%sourceMoveDirectory%" ) ask by selentoptas translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

317 views

1 answer

java - 在Java中使用单个堆栈实现队列(Implementing Queue Using single stack in java)

I'm trying to implement a queue using single stack using recursion. (我正在尝试使用递归使用单个堆栈实现队列 )But I am ... stack.push(data); return result1; } ask by Naveen translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

259 views

1 answer

java - 如何修复Java异常“ SQLSyntaxErrorException：表'xy'不存在”(How to fix the Java exception “SQLSyntaxErrorException: Table 'x.y' doesn't exist”)

I am build an online shopping application. (我正在构建一个在线购物应用程序 )The application was working fine until I ... .jar:4.3.7.RELEASE] at org.springframework.context.support.Abstract...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

594 views

1 answer

bootstrap-4 - 整行的垂直内容对齐(Vertical content alignment across the whole row)

I have the following code: (我有以下代码：) <div class="card text-white bg-primary"> <div class="card-body pb-0"> <div class=" ... 何想法如何做到这一点？) Thanks (谢谢) ask by Mark translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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478 views

1 answer

php - 与Laravel语法错误混淆：意外的“。” （对我来说似乎很好）(Confused with a Laravel syntax error: unexpected '.' (seems fine to me))

I'm new to Laravel. (我是Laravel的新手 ) I keep getting this syntax error: (我不断收到此语法错误：) ... 念什么！？) Thanks (谢谢) ask by henry translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

311 views

1 answer

node.js - Firebase函数：无法读取未定义的属性https(Firebase functions: Can not read property https of undefined)

During firebase deploy in terminal, I get an error on this line: (在终端中进行firebase deploy期间，此行出现错误：) // index. ... modules/cjs/loader.js:774:30) ask by Sean Dezoysa translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

132 views

1 answer

html - 表中两行之间的空格？(Space between two rows in a table?)

Is this possible via CSS? (这可能通过CSS吗？) I'm trying (我尝试着) tr.classname { border-spacing: 5em; } to no avail. (无 ... doing something wrong? (也许我做错了什么？) ask by Marin translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

240 views

1 answer

c - 在C Makefile中引用SDL时出错（无IDE）(Error in referencing SDL in C Makefile (no IDE))

I have the following error: (我有以下错误：) /usr/bin/ld: pixel_operations.o: in function `update_surface': pixel_operations.c:(.text+ ... 我怎样才能解决这个问题？) ask by Firox translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

434 views

1 answer

java - 运行2D游戏的配置IntelliJ(Run configuration IntelliJ for 2D game)

I was importing the source code of a Java game to my local IntelliJ (community edition 2.3.2019) and try to make it run. ... in advance. (提前谢谢了 ) ask by doct0re translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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513 views

1 answer

javascript - JavaScript中是否有睡眠/暂停/等待功能？ [重复](Is there a Sleep/Pause/Wait function in JavaScript? [duplicate])

Possible Duplicate: (可能重复：) What is the JavaScript version of sleep()? (什么是sleep（）的JavaScript版本？) Is there a JavaScript function ... 了一些东西，但没什么用处 ) ask by Richard translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

181 views

1 answer

c - 如何在C中获取文件大小？ [重复](How can I get a file's size in C? [duplicate])

Possible Duplicate: (可能重复：) How do you determine the size of a file in C? (如何确定C中文件的大小？) How can I find out the size of ... a bad idea. (恕我直言是一个坏主意 ) ask by Nino translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

357 views

1 answer

php - 在xampp中安装DVWA时出错(Error installing DVWA in xampp)

When i try to open localhost/dvwa i get this: (当我尝试打开localhost / dvwa时，我得到了：) Fatal error: Uncaught Error: ... ' ] = 'false'; ?> ask by JosecitoBaneador translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

322 views

1 answer

math - 设计函数f（f（n））== -n(Designing function f(f(n)) == -n)

A question I got on my last interview: (我上次面试时遇到的一个问题：) Design a function f , such that: (设计一个函数f ，使得：) f(f(n ... 设计它 ) Any ideas? (有任何想法吗？) ask by community wiki translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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451 views

1 answer

python - 如何在pytorch中使用gensim来创建意图分类器（使用LSTM NN）？(How to use gensim with pytorch to create an intent classifier (With LSTM NN)?)

The problem to solve: Given a sentence, return the intent behind it (Think chatbot) (要解决的问题：给定一个句子，返回其意图（想像聊天机器人）) Reduced ... . (一旦解决此问题，我就会在这里发布 ) ask by Souza translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

146 views

1 answer

python - 如何将JSON数据写入文件？(How do I write JSON data to a file?)

I have JSON data stored in the variable data . (我将JSON数据存储在变量data ) I want to write this to a text file for testing ... fix this? (如何解决这个问题？) ask by user1530318 translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

503 views

1 answer

matlab - Matlab，我需要找到其元素的总和最小的行（matlabr2019a）(Matlab, I need to find the row with the smallest sum of its elements (matlabr2019a))

E = M; fbest = inf; for k = 1:Rows if sumsqr(E(k,1:Columns)) < fbest fbest = sumsqr(E(k, 1:Columns)); xbest = E(k ... . (我似乎看不到为什么它不起作用 ) ask by Jhon Macieira translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

405 views

1 answer

python - 如何检查嵌套列表中的所有数字是否等于n(How to check if all numbers in a nested list are equal to n)

So I want to encode a secret image in another b&w image. (所以我想在另一个黑白图像中编码一个秘密图像 )This image must have the same size as ... 味着像素中的所有3个数字必须等于255 ) ask by Sania translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

404 views

1 answer

xml - 如何在XML中注释掉一个标签块？(How do I comment out a block of tags in XML?)

How do I comment out a block of tags in XML? (如何在XML中注释掉一个标签块？) Ie How can I comment out <staticText> and everything inside ... C，所以我可以注释掉更长的XML代码块 ) ask by Jonas translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

387 views

1 answer

java - 单击按钮时如何显示颜色选择器？(How to display a color selector when clicking a button?)

I'm making a program that draws some shapes and fills them with color. (我正在编写一个程序，绘制一些形状并用颜色填充它们 )I need to change the ' ... . (我想显示一个颜色选择器，如在Paint中 ) ask by Tito translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

310 views

1 answer

mysql - 如何获取MySQL数据库表的大小？(How to get the sizes of the tables of a MySQL database?)

I can run this query to get the sizes of all tables in a MySQL database: (我可以运行此查询来获取MySQL数据库中所有表的大小：) show table ... should I look at? (我应该看哪一栏？) ask by JPashs translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

437 views

1 answer

ruby-on-rails - 防止对特定操作进行ActiveRecord关联验证的最佳方法(Best way to prevent ActiveRecord association validations on specific actions)

I have 2 models: User and Purchase . (我有2个模型： User和Purchase )Purchases belong to Users. (购买属于用户 ) class User < ... 在寻找一种更常规的Rails方法来实现 ) ask by Doug translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

561 views

1 answer

flutter - 如何在离开闪屏之前显示确认对话框(How can I show confirm dialog before leave flutter screen)

I want to show alert dialog before dispose or leave screen or at latest show warning snakbar , How can I do that? (我想在处置或离 ... 在显示对话框之前配置的 ) ask by Mahmoud Niypoo translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

462 views

1 answer

python - 如果ID在django上的其他表中已经存在，如何禁用或隐藏“分配/重定向”按钮(How to disable or hide assign/redirect button if the ID already exist in other table on django)

class Patient(models.Model): name = models.CharField(max_length=50) active_choices = [('Yes', 'Yes'), ('No', 'No')] ... "></span> </a> ask by Ahmad Ebrahim translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

339 views

1 answer

css - CSS 3从左转换滑入(CSS 3 slide-in from left transition)

Is there a cross browser solution to produce a slide-in transition with CSS only, no javascript? (有没有一个跨浏览器解决方案来生成只有CSS的滑 ... //.../img.jpg /> </div> ask by Gimmy translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

229 views

1 answer

swift - Swift中的#pragma mark？(#pragma mark in Swift?)

In Objective C, I can use #pragma mark to mark sections of my code in the symbol navigator. (在Objective C中，我可以使用#pragma mark在符 ... 或者我是否必须使用丑陋的评论？) ask by Arbitur translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

347 views

1 answer

html - 如何使用CSS将文本垂直居中？ [重复](How do I vertically center text with CSS? [duplicate])

This question already has an answer here: (这个问题已经在这里有了答案：) How to center an element horizontally and vertically 19 ... 个的最好方式是什么？) ask by Irakli Lekishvili translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

574 views

1 answer

git - 如何还原未提交的更改，包括文件和文件夹？(How to revert uncommitted changes including files and folders?)

是否有git命令来还原工作树和索引中所有未提交的更改，并还删除新创建的文件和文件夹？ ask by MEM translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

369 views

1 answer

sql - 如何优化此SQL Delete语句以提高速度(How to optimize this SQL Delete statement for faster speed)

There is a faster way to run this SQL delete than this one: (运行此SQL delete比此方法更快：) DELETE FROM TABLE ... DISTINCT(MAIN_TABLE.key) FROM MAIN_TABLE) ask by mister translate from so...

asked Feb 21, 2021 in Technique[技术] by 深蓝 (71.8m points)

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