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functional programming - How to chain Swift Futures

I have defined the following functions: func createAccessControl() -> Future<SecAccessControl, Error> func evaluatePolicy( ... futures together, similar to JavaScript's "then"?...

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

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How Can I Do Multithreading better VB.net 4.7 framework?

My Form1 freeze when using too many proxy threads after like 20sec it unfreeze but sometimes it freeze and I have to ... coding, sorry I learned myself from Lynda. com and youtube....

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

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python 3.x - Problem with tf.while_loop InvalidArgumentError: Index out of range using input dim 0; input has only 0 dims [Op:StridedSlice] name: strided_slice/

I'm trying to parallelize this chunk of code using Tensorflow - import numpy as np import tensorflow as tf ... forms of guidance (even through comments) are highly appreciated!...

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

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数据插入问题

有点无语呀，这么简单的语句，可是我找了半天也没有查出来为什么插入不了数据。本地数据库是没有问题的，应该是代码问题，可是眼睛都要看瞎了也没有找到错误，求大神。最后没有数据，链接一切都正常，其他网页数据提交都没问题。...

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

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java - Why am i getting the out of START_OBJECT token error?

Im trying to consume a large Json response. I keep receiving this error: org.springframework.http.converter.HttpMessageNotReadableException: JSON ... .2264", "cities": { } } } ] }...

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

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windows 10 - Unable to Close Twain Source

I have a customer who suddenly started getting Twain errors when trying to scan in my program. The software was developed in 32 ... 10, 64-Bit, Version 1909 (OS Build 18363.1198)....

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

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oracle 子查询的一个疑惑

查询和姓名中包含字母u的员工在相同部门的员工的员工号和姓名 select employee_id, last_name，department_id from employees where department_id in ( select department_id ... 完后大概是这样的：为什么会自动的根据department_id进行分类了呢？...

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

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javascript - Adding script, via plugins, in the admin head

I've made a Wordpress plugin, and I'm trying to add javascript to the admin head. I've tried but couldn't managed to do it, ... ) { ?> <script> // javscript code </script> <?php }...

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

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请问一下写H5的时候你们都是兼容那些手机

如题，事情是这样的我们这边的不懂技术让我兼容一些金立啊魅族MX5啊华为P8啊一些低端机然后意思让QQ默认打开出问题还有就是微信默认打开出问题还有什么钉钉打开。。我也是醉了就是想问一下大家平常写H5的时候兼容的安卓机都是什么型号那些兼容那些不兼容的还是全部都兼容了？？？？请大家给我指定一些安卓的型号让我知道谢谢...

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

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如何在dataframe中删除某行当某列值为nan时？

just my luck 的值为nan时，删除Jack Matthews和Micheal Phillips这两行...

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

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343 views

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bash - How to delete all the lines after the last occurence of pattern?

i want to delete all the lines after the last occurence of pattern except the pattern itself file.txt honor apple ... all the line after the first occurence of pattern - honor...

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

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199 views

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console.log()方法输出问题

var oDiv=document.querySelector('div'); var oP=document.createElement('p'); console.log(oP); oP.innerHTML='hello'; oDiv.append(oP); 这里为什么输出不是<p></p>,而是<p>hello</p>呢？...

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

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546 views

1 answer

如何让scss编译时将@media合并到整个css的最后

现在在scss中使用@media会编译成多个@media eg: .a { @media screen and (max-width: 320px) { // css } } .b { @media screen and (max-width: 320px) { / ... { // css } .b { // css } } 这样可以让整个css更小嘛～...