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android - Coordinator Layout with Toolbar in Fragments or Activity

With the new design library there are several new layouts that change a lot how the toolbar can behave if the ... would be the best approach? See Question&Answers more detail:os...

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

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pointers - Understanding and relationship between Box, ref, & and *

I'm a bit confused about how pointers work in Rust. There's ref, Box, &, *, and I'm not sure how ... common use cases that I haven't mentioned. See Question&Answers more detail:os...

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

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Accurate calculation of CPU usage given in percentage in Linux?

It's a question which has been asked many times, however there is no well supported answer I could find. Many ... fields to non-idle time)? 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 to sort a file in-place

When we use sort file command, the file shows its contents in a sorted way what if I don't want to get any-kind of output but a sorted file? See Question&Answers more detail:os...

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

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.net - A list of Entity Framework providers for various databases

Which providers are there and your experience using them I would like to know about all possible native . ... ) SSAS Entity Framework Provider See Question&Answers more detail:os...

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

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ruby on rails - delete_all vs destroy_all?

I am looking for the best approach to delete records from a table. For instance, I have a user whose user ... to confirm the correct approach. 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++ - What's the difference between istringstream, ostringstream and stringstream? / Why not use stringstream in every case?

When would I use std::istringstream, std::ostringstream and std::stringstream and why shouldn't I just use std:: ... "; stHehe += "!"; 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 - CALL command vs. START with /WAIT option

How is the START command with a WAIT option START /wait notepad.exe START /wait notepad.exe ...any different ... on what is being executed? 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 - what is the difference between GROUP BY and ORDER BY in sql

When do you use which in general? Examples are highly encouraged! I am referring so MySql, but can't ... being different on another DBMS See Question&Answers more detail:os...

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

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What is the right way to POST multipart/form-data using curl?

I used this syntax to post a file along with some parameters: curl -v -include --form "key1=value1" --form ... host xxx.xxx.xxx.xxx left intact 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 - nginx: send all requests to a single html page

Using nginx, I want to preserve the url, but actually load the same page no matter what. I will use the url ... to always use the same page. See Question&Answers more detail:os...

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

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NHibernate vs LINQ to SQL

As someone who hasn't used either technology on real-world projects I wonder if anyone knows how these ... much their functionalities 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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algorithm - Calculate mean and standard deviation from a vector of samples in C++ using Boost

Is there a way to calculate mean and standard deviation for a vector containing samples using Boost? Or do I have ... feed the vector into 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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Add default value of datetime field in SQL Server to a timestamp

I've got a table that collects forms submitted from our website, but for some reason, when they created the table, ... 't know where to put 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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Convert spark DataFrame column to python list

I work on a dataframe with two column, mvv and count. +---+-----+ |mvv|count| +---+---- ... message with the second line: AttributeError: getInt See Question&Answers more detail:os...

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

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scala - Easy idiomatic way to define Ordering for a simple case class

I have a list of simple scala case class instances and I want to print them in predictable, lexicographical order using ... lines,7) A(words,50) 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 add Web API to an existing ASP.NET MVC (5) Web Application project?

Assuming you forgot to tick the Web API checkbox (add it to the project) when making a new MVC (5) ... .Configure(WebApiConfig.Register) MVC 4 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 data transfer object naming convention?

Given this scenario where you have "transfer objects" (POJO's with just getters/setters) which are passed by a ... to name the transfer objects? See Question&Answers more detail:os...

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

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264 views

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Code for download video from Youtube on Java, Android

I created code for download video from Youtube, but this code doesn't work with Wi-fi connection and work with ... ().execute(); } } See Question&Answers more detail:os...

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

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630 views

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git - Is there a way to squash a number of commits non-interactively?

I'm trying to squash a range of commits - HEAD to HEAD~3. Is there a quick way to do this, or do I need to use rebase --interactive? See Question&Answers more detail:os...

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

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class - What does new self(); mean in PHP?

I've never seen code like this: public static function getInstance() { if ( ! isset(self::$_instance)) { self ... ,which class does it point to? See Question&Answers more detail:os...

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

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505 views

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sql - Find all records which have a count of an association greater than zero

I'm trying to do something that I thought it would be simple but it seems not to be. I have a project model ... ) AND (count(vacancies) > 0). See Question&Answers more detail:os...

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

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cocoa touch - Can I pass a block as a @selector with Objective-C?

Is it possible to pass an Objective-C block for the @selector argument in a UIButton? ... forControlEvents:UIControlEventTouchUpInside]; 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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380 views

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c++ - How to pass arguments and redirect stdin from a file to program run in gdb?

I usually run a program as : ./a.out arg1 arg2 <file I would like to debug it using gdb. I am aware of ... that only works from the gdb prompt. See Question&Answers more detail:os...

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

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data structures - Test whether a list contains a specific value in Clojure

What is the best way to test whether a list contains a given value in Clojure? In particular, the behaviour of ... a standard way to do this? See Question&Answers more detail:os...

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

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523 views

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css - How to add a search box with icon to the navbar in Bootstrap 3?

I am using the new Twitter Bootstrap 3, and am trying to place a search box like this (below) in the top ... modify it to achieve what I need? See Question&Answers more detail:os...

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

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302 views

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In git, is there a way to show untracked stashed files without applying the stash?

If I run git stash -u, I can stash untracked files. However, said untracked files don't show up at ... stashed files without applying the stash? See Question&Answers more detail: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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Java 8 Supplier & Consumer explanation for the layperson

As a non-Java programmer learning Java, I am reading about Supplier and Consumer interfaces at the moment. And ... enough for my understanding. See Question&Answers more detail:os...

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

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