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cocoa - Objective-C Introspection/Reflection

Is there a built in method, function, API, commonly accepted way, etc. to dump the contents of an ... , get_class_methods()) and the OO Reflection API. Question&Answers:os...

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

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308 views

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javascript - AngularJS - Value attribute on an input text box is ignored when there is a ng-model used?

Using AngularJS if I set a simple input text box value to something like "bob" below. The value does not ... default value but that seems not to work either. Question&Answers:os...

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

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sql - Select count(*) from multiple tables

How can I select count(*) from two different tables (call them tab1 and tab2) having as result: Count_1 Count_2 123 ... .tab2 But all I have is: Count_1 123 456 Question&Answers:os...

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

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c - __FILE__ macro shows full path

The standard predefined macro __FILE__ available in C shows the full path to the file. Is there any way to short the path? ... /file.c I see to/file.c or file.c Question&Answers:os...

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

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c++ - Is it safe to link C++17, C++14, and C++11 objects

Suppose I have three compiled objects, all produced by the same compiler/version: A was compiled with the C++11 standard ... e.g. gcc, clang, vs++) are welcome Question&Answers:os...

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

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android - "Bitmap too large to be uploaded into a texture"

I'm loading a bitmap into an ImageView, and seeing this error. I gather this limit relates to a size limit ... image larger than 2048 pixels into an ImageView? Question&Answers:os...

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

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timer - How do I get my Python program to sleep for 50 milliseconds?

How do I get my Python program to sleep for 50 milliseconds? Question&Answers:os...

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

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gradle - Android Studio: Where is the Compiler Error Output Window?

When I 'Run' my project in Android Studio, in the 'Messages' window, I get: Gradle: FAILURE: Build failed with ... /Or how do I run with --stacktrace option? Question&Answers:os...

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

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How do I include a path to libraries in g++

I am trying to include the path to extra libraries in my makefile, but I can't figure out how to get the ... library. Just to files that were included. My bad. Question&Answers:os...

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

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268 views

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How do I prevent an Android device from going to sleep programmatically?

How do I prevent an Android device from going to sleep programmatically? Question&Answers:os...

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

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regex - php Replacing multiple spaces with a single space

This question already has answers here: Question&Answers:os...

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

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250 views

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oop - Why doesn't Java Map extend Collection?

I was surprised by the fact that Map<?,?> is not a Collection<?>. I thought it'd make a LOT of ... the other methods (except entrySet, which is redundant now)! Question&Answers:os...

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

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How do I turn a String into a InputStreamReader in java?

How can I transform a String value into an InputStreamReader? Question&Answers:os...

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

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javascript - Window.open and pass parameters by post method

With window.open method I open new site with parameters, which I have to pass by post method.I've found solution, ... this problem, why I can't get pass values? Question&Answers:os...

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

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94 views

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java - Android N change language programmatically

I found really weird bug that is reproduced only on Android N devices. In tour of my app there is ... configuration change) Locale.getDefault() is correct. Question&Answers:os...

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

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155 views

1 answer

How to export query result to csv in Oracle SQL Developer?

I'm using Oracle SQL Developer 3.0. Trying to figure out how to export a query result to a text file ( ... results window doesn't give me any export options. Question&Answers:os...

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

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231 views

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python - How do I exchange keys with values in a dictionary?

I receive a dictionary as input, and would like to to return a dictionary whose keys will be the input's values ... 'two' Any neat Pythonic way to achieve this? Question&Answers:os...

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

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259 views

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How to create a thread pool using boost in C++?

How do I create a thread pool using boost in C++, and how do I assign tasks to the threadpool? Question&Answers:os...

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

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629 views

1 answer

c# - Why should I prefer single 'await Task.WhenAll' over multiple awaits?

In case I do not care about the order of task completion and just need them all to complete, should I still use await ... (DoWork1(), DoWork2()).Wait(); } } } Question&Answers:os...

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

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94 views

1 answer

c# - XML serialization of interface property

I would like to XML serialize an object that has (among other) a property of type IModelObject (which is ... seems like an ugly workaround. Any suggestions? Question&Answers:os...

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

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477 views

1 answer

How to implement Unit Of Work pattern with Dapper?

Currently, I am trying to use Dapper ORM with Unit Of Work + Repository Pattern. I want to use Unit of ... Could someone please point me in the right direction? Question&Answers:os...

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

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90 views

1 answer

How to invoke Objective-C method from Javascript and send back data to Javascript in iOS?

In iOS, how can I call an Objective-C method from Javascript in a UIWebView and have it send data back to ... possible on iOS? How does PhoneGap achieve this? Question&Answers:os...

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

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143 views

1 answer

c# - Merging two arrays in .NET

Is there a built in function in .NET 2.0 that will take two arrays and merge them into one array? ... writing my own function to accomplish this if possible. Question&Answers:os...

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

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533 views

1 answer

sql - Possible to perform cross-database queries with PostgreSQL?

I'm going to guess that the answer is "no" based on the below error message (and this Google result), but is ... instead of schema, but c'est la vie... Question&Answers:os...

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

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82 views

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javascript - How to change CSS using jQuery?

I am trying to change the CSS using jQuery: $(init); function init() { $("h1").css("backgroundColor", "yellow ... ">This is some paragraph text</p> </div> Question&Answers:os...

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

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274 views

1 answer

android - Webview load html from assets directory

I'm trying to load a html page from the assets directory. I tried this, but it fails. public class ViewWeb ... 't really get any telling errors in LogCat... Question&Answers:os...

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

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236 views

1 answer

Why do we need a pure virtual destructor in C++?

I understand the need for a virtual destructor. But why do we need a pure virtual destructor? In one of the ... destructor also pure virtual? If yes..then why? Question&Answers:os...

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

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1.1k views

1 answer

swift4 - How can I use String substring in Swift 4? 'substring(to:)' is deprecated: Please use String slicing subscript with a 'partial range from' operator

I have the following simple code written in Swift 3: let str = "Hello, playground" let index = str.index(of: ... with partial range from be used in Swift 4? Question&Answers:os...

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

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