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android - Whatsapp like Collapsing Toolbar

In my app, I would like to implement Whatsapp home page like collapsible toolbar. That is, while scrolling down ... is scrolled. Kindly 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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c# - Should I worry about "This async method lacks 'await' operators and will run synchronously" warning

I have a interface which exposes some async methods. More specifically it has methods defined which return either Task ... I am not seeing? 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++ - std::map default value

Is there a way to specify the default value std::map's operator[] returns when an key does not exist? See Question&Answers more detail:os...

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

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301 views

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node.js - Change node_modules location

Is there a way to change the node_modules folder location? For example: - dir1 - dir2 - node_modules to: - dir1 - dir2 - node_modules 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 - DAG vs. tree using Git?

I've often read that Git uses the directed acyclic graph (DAG) data structure, with each commit as a node ... specifically with regards to Git? See Question&Answers more detail:os...

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

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386 views

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javascript - Performance of CSS Transitions vs. JS animation packages

I'm wondering is there any difference in performance of using CSS Transitions vs. any of the various ... transitionDuration for that element). See Question&Answers more detail:os...

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

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362 views

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html - In Javascript, how do I "clear" the back (history -1)?

When the user loads the page, I immediately do a window redirect to another location. The problem is, when the ... goes back TWO pages instead? 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 are the use cases for having a function return by const value for non-builtin type?

Recently I have read that it makes sense when returning by value from a function to qualify the return type ... returned object should be const? See Question&Answers more detail:os...

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

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bash - Detect if PATH has a specific directory entry in it

With /bin/bash, how would I detect if a user has a specific directory in their $PATH variable? For example if ... Your path is correctly set" fi 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 - Remove nodes from graph or reset entire default graph

When working with the default global graph, is it possible to remove nodes after they've been added, or ... graphs more easily if possible. See Question&Answers more detail:os...

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

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256 views

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What is the default database path for MongoDB?

I got an error about dbpath (/data/db/) does not exist, but /etc/mongodb.conf named it dbpath = /var/ ... is the default dbpath for 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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Android appcompat-v7:21.0.0 change material checkbox colors

I've updated my project to use the latest appcompat support library, the new version uses material design checkboxes ... is coming from them. See Question&Answers more detail:os...

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

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html - JavaScript: getting ImageData without canvas

Is it possible to get an ImageData Object from an image which is not on the canvas but somewhere else in the DOM tree ... <img> ? If yes, how? See Question&Answers more detail:os...

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

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283 views

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sql - Maintaining order in MySQL "IN" query

I have the following table DROP TABLE IF EXISTS `test`.`foo`; CREATE TABLE `test`.`foo` ( `id` int(10) unsigned ... 3 rows in set (0.00 sec) 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 I print uint32_t and uint16_t variables' value?

I am trying to print an uint16_t and uint32_t value, but it is not giving the desired output. #include <stdio. ... will be the desired output? See Question&Answers more detail:os...

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

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553 views

1 answer

r - Installing of SparkR

I have the last version of R - 3.2.1. Now I want to install SparkR on R. After I execute: > install. ... 4.0 How I can solve this problem? See Question&Answers more detail:os...

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

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397 views

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javascript - How to hide form code from view code/inspect element browser?

I want to hide form code from view code/inspect element browser , how can i do that ? This is my code, ... 3000); </script> Please see picture See Question&Answers more detail:os...

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

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385 views

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jquery - Javascript - dumping all global variables

Is there a way in Javascript to get a list or dump the contents of all global variables declared by Javascript/ ... its values is a bonus. See Question&Answers more detail:os...

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

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368 views

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c# - ObservableCollection and threading

I have an ObservableCollection in my class. And further into my class I have a thread. From this thread I ... have access to the dispatcher. See Question&Answers more detail:os...

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

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839 views

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regex - Fully qualified domain name validation

Is there a quick and dirty way to validate if the correct FQDN has been entered? Keep in mind there is no DNS ... via regex/awk/sed. Any ideas? See Question&Answers more detail:os...

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

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342 views

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r - multiple graphs in one canvas using ggplot2

I am trying to merge two ggplot2 plots into one based on this table: Type RatingA RatingB 1 One 3 36 2 Two ... something that would do the job. See Question&Answers more detail:os...

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

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430 views

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objective c - Suspending GCD query problem

i have trouble suspending a gcd query. Here is some code that demonstrates the problem: static dispatch_queue_t q ... appreciated, thank you. See Question&Answers more detail:os...

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

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325 views

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java - HttpURLConnection.getResponseCode() returns -1 on second invocation

I seem to be running into a peculiar problem on Android 1.5 when a library I'm using (signpost 1.1-SNAPSHOT) ... no reference to it. Any ideas? See Question&Answers more detail:os...

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

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187 views

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Android WIFI How To Detect When Specific WIFI Connection is Available

I need to detect when I have network connectivity to a SPECIFIC WIFI network. For example: As soon as you ... network, and not another network? See Question&Answers more detail:os...

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

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416 views

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javascript - Change the content of a div based on selection from dropdown menu

Is there a simple way, using JavaScript, to dynamically show/hide content in a <div> based on the users selection ... :hidden;">Content 3<div> See Question&Answers more detail:os...

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

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215 views

1 answer

android - How to change the Tabs Images in the TabHost

I am using the TabHost in my application, I am using four Tabs in my application and I want to use the ... help me in this. Thanks, david See Question&Answers more detail:os...

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

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526 views

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Convert XML to JSON object in Android

I have an XML string as shown below: <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"><s: ... possible to convert XML to JSON? See Question&Answers more detail:os...

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

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367 views

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silverlight 3.0 - Sync SelectedItems in a muliselect listbox with a collection in ViewModel

I have a multi-select listbox in a SL3 app using prism and I need a collection in my viewmodel that ... to approach this problem thanks Michael See Question&Answers more detail:os...

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

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