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I have a data like this in mongodb { "latitude" : "", "longitude" : "", "course" : "", "battery" : " ... it returns the above data result to me from the db? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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636 views

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reactjs - Unable to load script.Make sure you are either running a Metro server or that your bundle 'index.android.bundle' is packaged correctly for release

react-native run-android command terminates by leaving a message in android simulator. The message is as follows: Unable ... for release. What am I doing wrong? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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306 views

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java - Replacing all non-alphanumeric characters with empty strings

I tried using this but didn't work- return value.replaceAll("/[^A-Za-z0-9 ]/", ""); Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vue.js - How to implement debounce in Vue2?

I have a simple input box in a Vue template and I would like to use debounce more or less like this: < ... The filterkey is then used later in computed props. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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tfs - Team Build Error: The Path ... is already mapped to workspace

When creating a new build in Team Foundation Server, I get the following error when attempting to run the ... workspace by that name in the workspaces dialog. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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121 views

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ASP.NET MVC 4 Application Calling Remote WebAPI

I've created a couple ASP.NET MVC applications in the past, but I've never used WebAPIs before. I'm ... controller should use the WebAPI to get/put data. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Do Java primitives go on the Stack or the Heap?

I just know that the non-primitives (the objects) go on the heap, and methods go on the stack, but ... the object will have primitive and reference variables..? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - Counting DISTINCT over multiple columns

Is there a better way of doing a query like this: SELECT COUNT(*) FROM (SELECT DISTINCT DocumentId, DocumentSessionId ... one query (without using a sub-query) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What is the difference between an ordered and a sorted collection?

Is there any difference between a sorted and an ordered collection? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql - How to create relationships in MySQL

In class, we are all 'studying' databases, and everyone is using Access. Bored with this, I am trying to do ... ' one customer_id (to indicate who owns it). Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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229 views

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How can I create a "tooltip tail" using pure CSS?

I just came across a neat CSS trick. Check out the fiddle... .tooltiptail { display: block; border-color: #ffffff ... <div class="anothertail"></div> </div> Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Why is my command prompt freezing on Windows 10?

I'm adding this question after spending an entire day wrestling with this incredibly frustrating feature of the Windows ... stop running. What is going on? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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557 views

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c++ - std::shared_ptr thread safety explained

I'm reading http://gcc.gnu.org/onlinedocs/libstdc++/manual/shared_ptr.html and some thread safety issues are ... threads will see only newly created object? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iphone - A html5 web app for mobile safari to upload images from the Photos.app?

Is it possible to write a HTML5 web application designed for the iOS devices (iPad, iPhone, iPod Touch) which can ... to your twitter avatar via a web app. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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regex - How is the AND/OR operator represented as in Regular Expressions?

I'm currently programming a vocabulary algorithm that checks if a user has typed in the word correctly. I have ... or. May anyone help me solve this problem? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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81 views

1 answer

How to change background color in android app

I want to be able to change the background color to white in my android app in the simplest way possible. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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543 views

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regex - How to replace all strings to numbers contained in each string in Notepad++?

I'm trying to find all values with following pattern : value="4" value="403" value="200" value="201" value="116" value ... : .*"d+" How can I do a replacement? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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342 views

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python - Unresolved Import Issues with PyDev and Eclipse

I am very new to PyDev and Python, though I have used Eclipse for Java plenty. I am trying to work through ... else on my machine... requires this much effort. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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252 views

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javascript - jQuery access input hidden value

How can I access <input type="hidden"> tag's value attribute using jQuery? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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278 views

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How can I convert a String to an MD5 hash in iOS using Swift?

I want to convert a string like "abc" to an MD5 hash. I want to do this in iOS and Swift. ... "Hello"; echo md5($str); Output: 8b1a9953c4611296a827abf8c47804d7 Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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265 views

1 answer

javascript - How to upload image into HTML5 canvas

I am currently using http://paperjs.org to create an HTML5 canvas drawing app. I want to let users upload images ... I have seen the HTML5 drag and drop upload. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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605 views

1 answer

android - completely transparent status bar and navigation bar on lollipop

I'm trying to make an android launcher. I want to achieve a completely transparent status bar and navigation ... bar "transparent" instead of "translucent"? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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199 views

1 answer

mysql - How to convert time to the time zone of the iPhone device?

I have a time in EST timezone, it is done using the NOW() function on the mysql server. Because my server is located ... zone of the user. How do I do that? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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76 views

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android - How to get hosting Activity from a view?

I have an Activity with 3 EditTexts and a custom view which acts a specialised keyboard to add information into ... without passing the activity into the view? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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286 views

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javascript - Typescript: React event types

What is the correct type for React events. Initially I just used any for the sake of simplicity. Now, I ... for all events would be really appreciated. Thanks Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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413 views

1 answer

limiting java ssl debug logging

Using JVM flag -Djavax.net.debug=ssl is producing a tremendous ammount of logging, the details for every ... record plaintext packet print raw SSL/TLS packets Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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178 views

1 answer

css - How do min-content and max-content work?

How are the min-content and max-content values calculated in CSS? And what does intrinsic dimension mean? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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79 views

1 answer

ios - RSA implementations in Objective C

I am working on a simple app in objective-C that uses RSA Algorithm. I want to use it on Server/Client ... my project. I have to go though CommonCryptor.h. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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