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ios - NSURLSession with NSBlockOperation and queues

I have an app that currently uses NSURLConnection for the vast majority of its networking. I would like to move to ... do such a thing in a different way? Question&Answers:os...

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

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222 views

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c# - Nullable type issue with ?: Conditional Operator

Could someone explain why this works in C#.NET 2.0: Nullable<DateTime> foo; if (true) foo = null; else foo ... is more consistent with the rest of my code. Question&Answers:os...

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

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186 views

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Is it possible to use Razor View Engine outside asp.net

If I look at the Razor View Engine, then I see a very nice and concise syntax that is not particularly ... pointer, example, comment or explanation is welcome. Question&Answers:os...

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

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629 views

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iphone - How to convert NSArray to NSData?

Can anyone tell me how to convert an NSArray to an NSData? I have an NSArray. I need to send it to an ... an NSData. Please help me, I'm stuck here. Question&Answers:os...

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

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139 views

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c++ - Conversion constructor vs. conversion operator: precedence

Reading some questions here on SO about conversion operators and constructors got me thinking about the interaction ... choice was made. Thanks in advance Question&Answers:os...

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

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178 views

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About "_id" field in Android SQLite

Is the field "_id" necessary in Android SQLite? Question&Answers:os...

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

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javascript - Using Multiple Mongodb Databases with Meteor.js

Is it possible for 2 Meteor.Collections to be retrieving data from 2 different mongdb database servers? Dogs = Meteor. ... / mongodb://192.168.1.124:27017/cats Question&Answers:os...

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

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87 views

1 answer

c# - How to use signalr in Android

I am trying to integrate signalR in android app but no luck. I've been looking at various links but none of ... { mHubConnection.stop(); super.onDestroy(); } } Question&Answers:os...

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

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iphone - Why am I having to manually set my view's frame in viewDidLoad?

I have a pretty basic setup with a UINavigationController inside a UITabBarController. I'm wanting to programmatically ... closer, but still not matching #3. Question&Answers:os...

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

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syntax - What do the plus and minus signs mean in Objective-C next to a method?

In Objective-C, I would like to know what the + and - signs next to a method definition mean. - ... :(NSString*)pluginPath errors:(NSArray **)errors; 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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mysql - SQL order string as number

I have numbers saved as VARCHAR to a MySQL database. I can not make them INT due to some other depending ... can I make it appear ordered by numbers ascending? Question&Answers:os...

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

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194 views

1 answer

Adding Table rows Dynamically in Android

I am trying to create a layout where I need to add table rows dynamically. Below is the table layout ... its not populating correctly. Please advise. Thanks. Question&Answers:os...

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

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408 views

1 answer

Python Requests - No connection adapters

I'm using the Requests: HTTP for Humans library and I got this weird error and I don't know what is mean. No ... 168.1.61:8080/api/call' Anybody has an idea? Question&Answers:os...

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

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212 views

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R - Concatenate two dataframes?

Given two dataframes a and b: > a a b c 1 -0.2246894 -1.48167912 -1.65099363 2 0.5559320 -0. ... for positions in dataframe b where the header is missing. Question&Answers:os...

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

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160 views

1 answer

javascript - Finding element's position relative to the document

What's the easiest way to determine an elements position relative to the document/body/browser window? Right ... position. This method is also to cumbersome. Question&Answers:os...

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

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93 views

1 answer

Pass array to MySQL stored routine

I need to pass an array of strings as parameter to a MySQL stored routine. The array could be long and its ... help on how to do this would be appreciated! Question&Answers:os...

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

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653 views

1 answer

angular5 - How to add CORS request in header in Angular 5

I have added the CORS in header but I am still getting the CORS issue in my request. What is the correct way ... Headers: Origin, Content-Type, X-Auth-Token'); Question&Answers:os...

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

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427 views

1 answer

Android WebView, how to handle redirects in app instead of opening a browser

So right now in my app the URL I'm accessing has a redirect, and when this happens the WebView will open a ... However, I want to keep everything in my app. Question&Answers:os...

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

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883 views

1 answer

app config - How do you pass custom environment variable on Amazon Elastic Beanstalk (AWS EBS)?

The Amazon Elastic Beanstalk blurb says: Elastic Beanstalk lets you "open the hood" and retain full control ... the one in the Elastic Beanstalk configuration? Question&Answers:os...

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

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673 views

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inheritance - C#: Overriding return types

Is there way to override return types in C#? If so how, and if not why and what is a recommended way of ... But what would you recommend as a solution to this? Question&Answers:os...

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

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133 views

1 answer

java - How to make spring inject value into a static field

I know this may looks like a previously asked question but I'm facing a different problem here. I have ... not be instantiated and variable always equals null. Question&Answers:os...

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

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231 views

1 answer

c - How can I tell gcc not to inline a function?

Say I have this small function in a source file static void foo() {} and I build an optimized version of my ... add in a source code to prevent the inlining? Question&Answers:os...

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

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150 views

1 answer

javascript - Callback on CSS transition

Is it possible to get a notification (like callback) when a CSS transition has been completed? Question&Answers:os...

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

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647 views

1 answer

MaxJsonLength exception in ASP.NET MVC during JavaScriptSerializer

In one of my controller actions I am returning a very large JsonResult to fill a grid. I am getting ... missing something? Any help would be most appreciated. Question&Answers:os...

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

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142 views

1 answer

c++ - How to read a file line by line or a whole text file at once?

I'm in a tutorial which introduces files (how to read from file and write to file) First of all, this ... instead of reading each line or each word separately? Question&Answers:os...

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

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350 views

1 answer

Java: Why is the Date constructor deprecated, and what do I use instead?

I come from the C# world, so not too experienced with Java yet. I was just told by Eclipse that Date was ... in cases like above) should be used instead? Question&Answers:os...

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

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86 views

1 answer

How to add multiple values to a dictionary key in python?

Closed. This question needs details or clarity. It is not currently accepting answers. Question&Answers:os...

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

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342 views

1 answer

algorithm - Cycles in an Undirected Graph

Given an undirected graph G=(V, E) with n vertices (|V| = n), how do you find if it contains a cycle in O(n)? Question&Answers:os...

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

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