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c++ - Move or Named Return Value Optimization (NRVO)?

Lets say we have the following code: std::vector<int> f() { std::vector<int> y; ... return y; ... either approach, according to the standard? See Question&Answers more detail:os...

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

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sql - Difference between Subquery and Correlated Subquery

Is the following piece of SQL Query a normal query or a Correlated Subquery ?? SELECT UserID, FirstName, ... the difference between the both See Question&Answers more detail:os...

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

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jquery - Perform curl request in javascript?

Is it possible to send a curl request in jQuery or javascript? Something like this: curl -H 'Authorization: Bearer ... 's $.get() function. See Question&Answers more detail:os...

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

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mongodb - Batch insert/update using Mongoid?

I googled and all others, but I didn't find the answer. The question is: Hi, how can I do batch insert with Mongoid to MongoDB? 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 - iphone keychain items persist after application uninstall?

I am playing with idandersen's scifihifi-iphone code for keychain and came across the following behavior - I ... deleted with the application? 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 - EJB @Schedule wait until method completed

I want to write a back-ground job (EJB 3.1), which executes every minute. For this I use the ... the current execution is not completed? 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 - How to check internet connection in alamofire?

I am using below code for making HTTP request in server.Now I want to know whether it is connected to ... self.handleSuccess(JSON(result)) } 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# - Detecting Client Death in WCF Duplex Contracts

I'm trying to build a SOA where clients can perform long running queries on the server and the server responds ... detect some of these things. 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 detect IP address change programmatically in Linux?

Is there a way to detect IP address changes on the local machine in Linux programmatically using C++? 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 Drag/Animation of Views

I'm not a programmer, but I'm trying to learn android development, and having a blast. Lately I've hit a ... any responses I get over there. 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 do you click a button in a webbrowser control?

For example, using code and no user input, how would I have my program click the "Search" button on google ( ... box and am at google.com) See Question&Answers more detail:os...

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

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encryption - Easy way to Encrypt/Decrypt string in Android

My question is how to encrypt a String: String AndroidId; @Override public void onCreate(Bundle savedInstanceState) { ... storing a MAC address. 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 - PDF search on the iPhone

After two days trying to read annotations from a PDF using Quartz, I've managed to do it and posted my code ... stuff works it's pretty awesome. 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 avoid variable substitution in Oracle SQL Developer with 'trinidad & tobago'

When I try to execute this statement in Oracle SQL Developer 2.1 a dialog box "Enter Substitution Variable" ... the purpose of the statement? 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 - Passing variables in remote ssh command

I want to be able to run a command from my machine using ssh and pass through the environment variable ... the value of $BUILD_NUMBER ? 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 display multiple notifications in android

I am receiving only one notification and if there comes another notification, it replaces the previous one and here ... (0, notification); } See Question&Answers more detail:os...

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

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wpf - Select TreeView Node on right click before displaying ContextMenu

I would like to select a WPF TreeView Node on right click, right before the ContextMenu displayed. For WinForms ... are the WPF alternatives? 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 - Web Config Transform not working

In a .NET MVC 3.0 Application I have the following configuration in appSettings: web.config <appSettings> < ... be wrong in this configuration? 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 - rawQuery(query, selectionArgs)

I want to use select query for retrieving data from table. I have found, rawQuery(query, selectionArgs) method ... be passed to rawQuery method? See Question&Answers more detail:os...

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

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angular - What is the difference between component and directive?

I have just started working with Angular 2. I was wondering what are the differences between components and directives in Angular 2? See Question&Answers more detail:os...

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

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194 views

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jQuery calculate sum of values in all text fields

I have an order form with about 30 text fields that contain numerical values. I'd like to calculate the sum of all ... price").val() }) }); See Question&Answers more detail:os...

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

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272 views

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Swift - what's the difference between metatype .Type and .self?

What's the difference between metatype .Type and .self in Swift? Do .self and .Type return a struct? I understand ... . How do you use .Type? See Question&Answers more detail:os...

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

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css - Zoom control and streetview not showing on my Google map?

I'm inserting a very basic Google map into my page and the zoom control and streetmap icon are not visible, ... what the problem could be? See Question&Answers more detail:os...

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

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floating point - storing money amounts in mysql

I want to store 3.50 into a mysql table. I have a float that I store it in, but it stores as 3.5, not ... I get it to have the trailing zero? See Question&Answers more detail:os...

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

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database - SQLite insert speed slows as number of records increases due to an index

Original question Background It is well-known that SQLite needs to be fine tuned to achieve insert speeds on the ... least 10k inserts / second. See Question&Answers more detail:os...

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

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207 views

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How to pass command-line arguments when calling source() on an R file within another R file

In one R file, I plan to source another R file that supports reading two command-line arguments. This sounds ... . Any help is appreciated. See Question&Answers more detail:os...

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

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1.5k views

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android - Unable to cast Action Provider to Share Action Provider

Below is the code for my Activity import android.app.Activity; import android.os.Bundle; import android.support.v7 ... " /> </menu> 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 - Support for Compressed Strings being Dropped in HotSpot JVM?

On this Oracle page Java HotSpot VM Options, it lists -XX:+UseCompressedStrings as being available and on by default. ... requires only 1.0 GB. See Question&Answers more detail:os...

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

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