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android - How to get Last record from Sqlite?

I have a one table question_table and one ImageButton (Back). I need to get the last inserted record from the ... ; Please give me some hint. See Question&Answers more detail:os...

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

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typeclass - How does deriving work in Haskell?

Algebraic Data Types (ADTs) in Haskell can automatically become instances of some typeclasses (like Show, Eq) by ... which can be derived? See Question&Answers more detail:os...

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

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Unable to access 'git/attributes'

What does warning remote: warning: unable to access '/root/.config/git/attributes': Permission denied ... infrastructure problem to hoster? See Question&Answers more detail:os...

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

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php - Access POST values in Symfony2 request object

OK, this is a newbie question, but I can't find the answer anywhere. In a controller in Symfony2, I want to ... What am I doing wrong? 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++ namespaces advice

I'm just teaching myself C++ namespaces (coming from a C# background) and I'm really starting to think that ... I ended up tackling this issue. 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++ - How does weak_ptr work?

I understand how to use weak_ptr and shared_ptr. I understand how shared_ptr works, by counting the number of ... things it uses. 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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javascript - jQuery events .load(), .ready(), .unload()

Just a simple question, for the jQuery event. Are the .load(), .ready() and .unload() run in order when the DOM ... this, as I am new to jQuery? 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 Do We Distinguish Never-Asked From Stop-Asking in Android M's Runtime Permissions?

When it comes to the M Developer Preview runtime permissions, according to Google: If you have never asked for a ... we asked before or not? See Question&Answers more detail:os...

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

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testing - Why should I practice Test Driven Development and how should I start?

Lots of people talk about writing tests for their code before they start writing their code. This practice is ... started with this practice? 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 equivalent to php's hmac-SHA1

I'm looking for a java equivalent to this php call: hash_hmac('sha1', "test", "secret") I tried this, using ... "test" do not seem to match. 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 - Beautifulsoup : Difference between .find() and .select()

When you use BeautifulSoup to scrape a certain part of a website, you can use soup.find() and soup.findAll() or ... etc.) Or are they the same? 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# - Calculate a MD5 hash from a string

I use the following C# code to calculate a MD5 hash from a string. It works well and generates a 32- ... the customer to enter the code! See Question&Answers more detail:os...

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

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node.js - Any way to force strict mode in node?

Could not find this answer anywhere, but I did find several mailing lists where this was discussed, these ... than adding extra boilerplate. 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# - How to COUNT rows within EntityFramework without loading contents?

I'm trying to determine how to count the matching rows on a table using the EntityFramework. The problem is that ... so I changed the names.] 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 - Do lambda expressions have any use other than saving lines of code?

Do lambda expressions have any use other than saving lines of code? Are there any special features provided by ... .compareTo(o2.getName()); 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 - Socket.IO handling disconnect event

Can't handle this disconnect event, don't know why socket is not sent to the client / client doesn't respond! ... be deleted, but it's not. See Question&Answers more detail:os...

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

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Maven Out of Memory Build Failure

As of today, my maven compile fails. [INFO] [ERROR] Unexpected [INFO] java.lang.OutOfMemoryError: Java heap ... > </configuration> </plugin> See Question&Answers more detail:os...

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

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select - Selecting text on focus using jQuery not working in Safari and Chrome

I have the following jQuery code (similar to this question) that works in Firefox and IE, but fails (no errors, just ... { $(this).select() }); 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 - How can I parse JSON in Google App Engine?

I'd like to parse a JSON string into an object under Google App Engine (python). What do you recommend? Something ... app? Is it secure? 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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python - Pandas - Compute z-score for all columns

I have a dataframe containing a single column of IDs and all other columns are numerical values for which I ... your explanation of indexing. See Question&Answers more detail:os...

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

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xcode10 - Xcode 10 (iOS 12) does not contain libstdc++6.0.9

I download the newest Xcode from Apple, but I found I cannot search the library named "libstdc++6.0.9". 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 define and work with an array of bits in C?

I want to create a very large array on which I write '0's and '1's. I'm trying to simulate a physical ... way to do it? Thanks for your answers See Question&Answers more detail:os...

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

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linux - Running shell script in parallel

I have a shell script which shuffles a large text file (6 million rows and 6 columns) sorts the file based the ... slow. Thanks for your help. 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 - How to correctly use Google Plus Sign In with multiple activities?

What would be a good/recommended way of tying up the Google+ api client life cycle with the flow of a multi ... or at least a general guideline. See Question&Answers more detail:os...

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

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linux - How do I build a native (command line) executable to run on Android?

I've had success with building an Android app (GUI) that uses a native (JNI) library. However, now I would ... do I build something like that? 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 - Add UIView Above All Other Views, Including StatusBar

I'm wanting to create a view (UIControl) which blocks all input and shows a UIActivityIndicatorView while ... progress, is processing. See Question&Answers more detail:os...

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

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199 views

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ios - How to switch to different Storyboard for iPhone 5?

Just as an app utilizes different storyboards for iPad and iPhone, I would like my app to use a ... default storyboard without the plist. See Question&Answers more detail:os...

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

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flutter - Vertical viewport was given unbounded height

This is my code: @override Widget build(BuildContext context) { return new Material( color: Colors.deepPurpleAccent, ... /object.dart:1555:9) See Question&Answers more detail:os...

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

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