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html - Is putting a div inside an anchor ever correct?

I've heard that putting a block element inside a inline element is a HTML sin: <a href="http://example. ... Does anyone have any further tips about this issue? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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161 views

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java - How to best position Swing GUIs?

In another thread I stated that I liked to center my GUIs by doing something like this: JFrame frame = new ... true); and inquiring minds want to know why? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql - Return row only if value doesn't exist

I have 2 tables - reservation: id | some_other_column ----+------------------ 1 | value 2 | ... with NOT cancelled, since the simple WHERE doesn't work here. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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syntax - What does "use strict" do in JavaScript, and what is the reasoning behind it?

Recently, I ran some of my JavaScript code through Crockford's JSLint, and it gave the following error: Problem at ... strict"; string or is it for future use? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Dealing with multiple Python versions and PIP?

Is there any way to make pip play well with multiple versions of Python? For example, I want to use pip to ... it's not a solution to this particular problem. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Use 'import module' or 'from module import'?

I've tried to find a comprehensive guide on whether it is best to use import module or from module import. I' ... best way to avoid any gotchas down the road? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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What are type hints in Python 3.5?

One of the most talked-about features in Python 3.5 is type hints. An example of type hints is mentioned in this ... and when they should be used and when not? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Unable to access React instance (this) inside event handler

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asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How to update nested state properties in React

I'm trying to organize my state by using nested property like this: this.state = { someProperty: { flag:true } ... doesn't work. How can this be done correctly? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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multithreading - How do you kill a Thread in Java?

How do you kill a java.lang.Thread in Java? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - What is the difference between shallow copy, deepcopy and normal assignment operation?

import copy a = "deepak" b = 1, 2, 3, 4 c = [1, 2, 3, 4] d = {1: 10, 2: 20, 3: 30} ... to mutable & immutable objects? If so, can you please explain it to me? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Mocking static methods with Mockito

I've written a factory to produce java.sql.Connection objects: public class MySQLDatabaseConnectionFactory implements ... mock/verify this specific use-case? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What is a StringIndexOutOfBoundsException? How can I fix it?

This is my code: private void bringData() { final TextView mTextView = (TextView) findViewById(R.id.textView); // ... but I cannot find out how to fix it. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How do I shuffle an array in Swift?

How do I randomize or shuffle the elements within an array in Swift? For example, if my array consists of 52 ... shuffle the array in order to shuffle the deck. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How do I copy a file in Python?

How do I copy a file in Python? I couldn't find anything under os. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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170 views

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Launch custom android application from android browser

Can anybody please guide me regarding how to launch my android application from the android browser? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How do I specify unique constraint for multiple columns in MySQL?

I have a table: table votes ( id, user, email, address, primary key(id), ); Now I want to make the ... an example. So please don't worry about the semantics. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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316 views

1 answer

c# - Split List into Sublists with LINQ

Is there any way I can separate a List<SomeObject> into several separate lists of SomeObject, using the item index ... size to be a parameter of this function. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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324 views

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Parsing CSV files in C#, with header

Is there a default/official/recommended way to parse CSV files in C#? I don't want to roll my own ... but work to basically deserialize the file into classes. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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107 views

1 answer

How does the "this" keyword in Javascript act within an object literal?

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asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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137 views

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html - Flex / Grid layouts not working on button or fieldset elements

I'm trying to center inner elements of a <button>-tag with flexbox's justify-content: center. But Safari does not center ... > <span>Test</span> </p> </div> Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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288 views

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css - Click through div to underlying elements

I have a div that has background:transparent, along with border. Underneath this div, I have more elements. ... that I can click on the underlying elements. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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278 views

1 answer

javascript - How to use FormData for AJAX file upload?

This is my HTML which I'm generating dynamically using drag and drop functionality. <form method="POST" id="contact" name ... (data){ alert(data); } }); } Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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214 views

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string aggregation - How to make a query with group_concat in sql server

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asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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330 views

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postgresql - How does the search_path influence identifier resolution and the "current schema"

Is it possible to define in which schema new tables get created by default? (Referred by "unqualified table ... they have unqualified names. Is this possible? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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98 views

1 answer

How can I do string interpolation in JavaScript?

Consider this code: var age = 3; console.log("I'm " + age + " years old!"); Are there any other ... a variable in to a string, apart from string concatenation? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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359 views

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bash - Why can't I change directories using "cd" in a script?

I'm trying to write a small script to change the current directory to my project directory: #!/bin/bash cd /home/ ... , it does nothing. What am I doing wrong? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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79 views

1 answer

How to really read text file from classpath in Java

I am trying to read a text file which is set in CLASSPATH system variable. Not a user variable. I am trying ... I am always getting null into my InputStream in. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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