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cryptography - How to cryptographically hash a JSON object?

The following question is more complex than it may first seem. Assume that I've got an arbitrary JSON object, ... any approaches or thoughts =) See Question&Answers more detail:os...

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

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javascript - How can I draw an image from the HTML5 File API on Canvas?

I would like to draw an image opened with the HTML5 File API on a canvas. In the handleFiles(e) method, I can ... "canvas"/> </body> </html> See Question&Answers more detail:os...

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

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Using existing system sounds in iOS App [swift|

Is it possible to use the existing Apple system sounds in my own app? I would like to write a sample app ... bought it? Thanks and regards Jens See Question&Answers more detail:os...

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

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When to use Dependency Injection

I've had a certain feeling these last couple of days that dependency-injection should really be called "I can't make ... DI is the way to go? See Question&Answers more detail:os...

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

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objective c - NSString : easy way to remove UTF-8 accents from a string?

I want to change a sentence, for example: être ou ne pas être. C'était là-bas. Would become: Etre ou ne ... on my own by checking each char? See Question&Answers more detail:os...

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

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apache spark - pyspark: rolling average using timeseries data

I have a dataset consisting of a timestamp column and a dollars column. I would like to find the average ... weekly windows don't overlap? See Question&Answers more detail:os...

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

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c - Keeping a global reference to the JNIEnv environment

I am storing off JNIEnv in a global so I can call static java methods later. But is it nessasary to store ... ) { //use globalEnvPointer here } See Question&Answers more detail:os...

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

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iphone - How can I detect a double tap on a certain cell in UITableView?

How can I detect a double tap on a certain cell in UITableView? i.e. I want to perform one action if the ... can I achieve this goal? Thanks. See Question&Answers more detail:os...

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

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How to draw smooth text in libgdx?

I try to draw simple text in my android game on libgdx, but it's look sharp. How to make text look smooth in ... -ppuX*2f, height-0.5f*ppuY); See Question&Answers more detail:os...

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

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When should I use Outlook REST API vs Microsoft Graph API?

I am working on an application that needs to retrieve and edit calendar events from Outlook.com and Office 365. I ... why are there two API's? See Question&Answers more detail:os...

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

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c# - Regex for validating multiple E-Mail-Addresses

I got a Regex that validates my mail-addresses like this: ([a-zA-Z0-9_-.]+)@(([[0-9]{1,3}.[ ... while let them be splitted through a semicolon? See Question&Answers more detail:os...

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

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lisp - How Are Lazy Sequences Implemented in Clojure?

I like Clojure. One thing that bothers me about the language is that I don't know how lazy sequences are ... are lazy sequences most efficient? See Question&Answers more detail:os...

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

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mysql - How can I implement single table inheritance using Laravel's Eloquent?

Currently I have a model class named Post. class Post extends Eloquent { protected $table = 'posts'; protected ... this and where to start? See Question&Answers more detail:os...

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

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unix - What's the difference between "C system calls" and "C library routines"?

There are multiple sections in the manpages. Two of them are: 2 Unix and C system calls 3 C Library routines ... and what is the difference? See Question&Answers more detail:os...

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

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javascript cut/copy/paste to clipboard: how did Google solve it?

Yes, this question has been asked again and again: how to copy and paste from and to the system clipboard ... has tackled the clipboard problem? See Question&Answers more detail:os...

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

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ios - MOV to Mp4 video conversion iPhone programmatically

I am developing media server for Play station 3 in iPhone. I came to know that PS3 doesn't support . ... .OR without any Thirdparty libraries? See Question&Answers more detail:os...

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

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windows - Run Python Script on Selected File

I would like to write a python script that would upload any file I select in Windows Explorer. The idea is to ... to catch.... Please advise! See Question&Answers more detail:os...

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

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187 views

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How do integrate Delphi with Active Directory?

We need to validate an user on Microsoft's Active Directory using Delphi 7, what is the best way to do ... of the scenarios described above? See Question&Answers more detail:os...

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

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android - Detecting the scrolling direction in the adapter (up/down)

I am trying to mimic the Google Plus application in my project, as it seems to be the reference now. The ... upwards or downwards in my adapter? See Question&Answers more detail:os...

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

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asp.net - Disable button on form submission

I have a button that I would like to disable when the form submits to prevent the user submitting multiple ... ajax page lifecycle if possible. See Question&Answers more detail:os...

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

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293 views

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android - uninstall app silently with system privileges

My app have system privileges. It will be inside firmware, now it's located at /system/app I was able to ... don't have such class). Thanks See Question&Answers more detail:os...

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

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c++ - Image edge smoothing with opencv

I am trying to smooth output image edges using opencv framework, I am trying following steps. Steps took from here ... the image is not smooth. See Question&Answers more detail:os...

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

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python - ImproperlyConfiguredError about app_name when using namespace in include()

I am currently trying out Django. I use the namespace argument in one of my include()s in urls.py. When I ... as stated in the error message? See Question&Answers more detail:os...

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

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initialization - In Scala, what exactly does 'val a: A = _' (underscore) mean?

What exactly does val a: A = _ initialize a value to? Is this a typed null? Thanks. See Question&Answers more detail:os...

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

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Undo git filter-branch

I accidentally delete a file from my repo using git filter-branch: git filter-branch -f --index-filter ' ... is the file permanently deleted? See Question&Answers more detail:os...

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

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java - Concurrent JUnit testing

I have a large JUnit test suite, where I'd quite like to run all the tests concurrently for two reasons: ... to run all the tests concurrently? See Question&Answers more detail:os...

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

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363 views

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c# - ASP - Core Migrate EF Core SQL DB on Startup

Is it possible to have my ASP Core Web API ensure the DB is migrated to the latest migration using EF Core? ... I want to do it programatically. See Question&Answers more detail:os...

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

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c# - Resolve IContainer

What is the suggested method of getting the Autofac container from inside a class in the application? Does Autofac ... once I've build it? See Question&Answers more detail:os...

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

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