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caching - Clear MySQL query cache without restarting server

Is there any way to clear mysql query cache without restarting mySQL server? See Question&Answers more detail:os...

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

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119 views

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What does send() do in Ruby?

Can someone please tell me what send("#{Model.find...}") is and does? See Question&Answers more detail:os...

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

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340 views

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c# - How to use Push Notifications in Xamarin Forms

I have an app using Xamarin.Forms targeting IOS, Android and WP 8. I need push notification feature in my app. I ... is the link for my answer. 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 create a centered UICollectionView like in Spotify's Player

I am have a lot of difficulty trying to create a UICollectionView like in Spotify's Player that acts like this: ... events? Would love any 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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ruby on rails - Add a default value to a column through a migration

How do I add a default value to a column that already exists through a migration? All the documentation I can find ... but in this case it does. 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 Removing Some Foreign keys

I have a table whose primary key is used in several other tables and has several foreign keys to other ... above without getting this error? 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 - Where should virtualenvs be created?

I'm confused as to where I should put my virtualenvs. With my first django project, I created the project with the ... a correct 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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html - How do I add a Font Awesome icon to input field?

How do I use the search icon included in Font Awesome for input? I have a search feature on my site (based on ... </div> </form> </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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Mapping over values in a python dictionary

Given a dictionary { k1: v1, k2: v2 ... } I want to get { k1: f(v1), k2: f(v2) ... } ... original dictionary is mutated or a copy is created. See Question&Answers more detail:os...

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

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Identifying the dependency relationship for python packages installed with pip

When I do a pip freeze I see large number of Python packages that I didn't explicitly install, e.g. ... uninstalling it or upgrading 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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264 views

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Set cURL to use local virtual hosts

Using Apache or Ngnix I always create development sites based on real projects such as http://project1.loc which, ... using the hosts 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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325 views

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iphone - NSFetchedResultsController with sections created by first letter of a string

Learning Core Data on the iPhone. There seem to be few examples on Core Data populating a table view with sections. The ... Root"]; //.... } See Question&Answers more detail:os...

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

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382 views

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android - First letter capitalization for EditText

I'm working on a little personal todo list app and so far everything has been working quite well. There is one ... 't find out what it is. See Question&Answers more detail:os...

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

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inner classes - Is not an enclosing class Java

I'm trying to make a Tetris game and I'm getting the compiler error Shape is not an enclosing class when I try to ... } What am I doing wrong ? See Question&Answers more detail:os...

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

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php - Composer killed while updating

I got a problem, I tried to install a new package to my Laravel 4 project. But when I run php composer. ... Does composer really need more RAM? See Question&Answers more detail:os...

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

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403 views

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android - How to create context menu for RecyclerView

How do I implement context menu for RecyclerView? Apparently calling registerForContextMenu(recyclerView) doesn't work ... implementing 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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343 views

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c++ - Can lambda functions be templated?

In C++11, is there a way to template a lambda function? Or is it inherently too specific to be ... language allow templating lambda functions? 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++ - Why do we copy then move?

I saw code somewhere in which someone decided to copy an object and subsequently move it to a data member of a ... When should I do this myself? See Question&Answers more detail:os...

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

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254 views

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Finding the length of an integer in C

I would like to know how I can find the length of an integer in C. For instance: 1 => 1 25 => 2 12512 => 5 0 ... so on. How can I do this in 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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455 views

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smtp - Send Email via C# through Google Apps account

I have a standard Google Apps account. I have setup a custom domain through Google Apps. I am able to send ... custom domain via Google? 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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226 views

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android - How to change line color in EditText

I am creating an EditText in my layout xml file But I want to change color line in EditText from Holo to (for ... red. How that can be done? See Question&Answers more detail:os...

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

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400 views

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javascript - Count immediate child div elements using jQuery

I have the following HTML node structure: <div id="foo"> <div id="bar"></div> <div id="baz"> <div id=" ... result should be two (bar and baz). See Question&Answers more detail:os...

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

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285 views

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android - Unable to connect with remote debugger

I'm using React.JS and when I do react-native run-android (with my device plugged in) I see a blank page. When I ... 4.1 react-native": "0.38.0 See Question&Answers more detail:os...

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

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478 views

1 answer

internet explorer - Make Adobe fonts work with CSS3 @font-face in IE9

I'm in the process of building a small intranet application and try, with no luck, to use Adobe font I ... static content) under IIS 7.5 See Question&Answers more detail:os...

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

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597 views

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asp.net mvc - How to set ViewBag properties for all Views without using a base class for Controllers?

In the past I've stuck common properties, such as the current user, onto ViewData/ViewBag in a global fashion ... code into the MVC pipeline? See Question&Answers more detail:os...

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

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242 views

1 answer

javascript - Using OAuth2 in HTML5 Web App

I am currently experimenting with OAuth2 to develop a mobile application built entirely in JavaScript that talks to ... implemented this so far. See Question&Answers more detail:os...

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

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303 views

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javascript - Display a loading bar before the entire page is loaded

I would like to display a loading bar before the entire page is loaded. For now, I'm just using a small delay ... won't load/display at all. See Question&Answers more detail:os...

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

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221 views

1 answer

ios - Swift apply .uppercaseString to only the first letter of a string

I am trying to make an autocorrect system, and when a user types a word with a capital letter, the ... capitalized? Thanks for any 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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