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javascript - Copy to clipboard without Flash

I found many solutions for copying to the clipboard, but they all either with flash, or for websites side. I' ... and of course cross-browser. See Question&Answers more detail:os...

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

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842 views

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typescript - Angular 6 View is not updated after changing a variable within subscribe

Why is the view not being updated when a variable changes within a subscribe? I have this code: example. ... the need of calling detectChanges. See Question&Answers more detail:os...

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

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547 views

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data structures - Linked List in SQL

What's the best way to store a linked list in a MySQL database so that inserts are simple (i.e. you don't ... can easily be pulled out in order? 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 - What is the purpose of constraint naming

What is the purpose of naming your constraints (unique, primary key, foreign key)? Say I have a table which is using ... best, I'm new to 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 - 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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c++ - MinGW linker error: winsock

I am using MinGW compiler on Windows to compile my C++ application with sockets. My command for linking looks ... the problem can be, please? 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 - Show results while script is still executing

Right now in order to see the results, I have to wait until the entire code is done executing. It hangs until ... know how to do this? 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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python - numpy is already installed with Anaconda but I get an ImportError (DLL load failed: The specified module could not be found)

I am using the Anaconda distribution with Python 3.7. Among the packages installed, I have numpy, pandas, ... help would be very 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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phpMyAdmin is throwing a #2002 cannot log in to the mysql server phpmyadmin

I have installed MySQL server enterprise 5.1 on my local machine and now I want to install phpMyAdmin, ... having this problem since yesterday. See Question&Answers more detail:os...

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

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828 views

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swift - How do I check if a firebase database value exists?

I'm using the Realtime Database with Google's Firebase, and I'm trying to check if a child exists. My ... Comment if any clarification is needed See Question&Answers more detail:os...

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

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736 views

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c# - _=> what does this underscore mean in Lambda expressions?

What does an lambda expression like _=> expr mean? What is the purpose of _ as input to lambda? Example: int count ... (_ => count += 1); See Question&Answers more detail:os...

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

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579 views

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ruby on rails - Overriding id on create in ActiveRecord

Is there any way of overriding a model's id value on create? Something like: Post.create(:id => 10, :title ... ideal, but obviously won't work. 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# - DateTime to javascript date

From another answer on Stackoverflow is a conversion from Javascript date to .net DateTime: long msSinceEpoch = ... DateTime to Javascript Date? 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 - How to create a number picker dialog?

I want to be able to create a Dialog that allows the user to pick a number from a specified range. I know that ... the last 3 hours to no avail. See Question&Answers more detail:os...

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

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322 views

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c++ - Launch Failed. Binary not found. CDT on Eclipse Helios

I'm using Eclipse Helios on Ubuntu 10.04, and I'm trying to install CDT plugin on it. I download it from here ... me how to fix it? 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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491 views

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java - Error: JAVA_HOME is not defined correctly executing maven

I installed java and set the path environment and when I run echo $JAVA_HOME in the terminal I get the following ... end /bin/java/bin/java See Question&Answers more detail:os...

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

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273 views

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android activity has leaked window com.android.internal.policy.impl.phonewindow$decorview Issue

I am working with Android application to show network error. NetErrorPage.java package exp.app; import android.app.Activity; ... "); } }); } See Question&Answers more detail:os...

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

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724 views

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xml drawable - Understanding Android's <layer-list>

I don't understand how the layer-lists work. I read the official documentation with some examples but it does not ... </item> </layer-list> See Question&Answers more detail:os...

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

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354 views

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java - AngularJS HTML5 Mode - How do direct links work without server specific changes?

Note: This question could also read: How to support bookmarking of hashbang-less client side mvc frameworks in Java. ... and seems like a hack. See Question&Answers more detail:os...

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

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133 views

1 answer

Android Webview POST

I am trying to accomplish something quite simple, yet I have found no good documentation on this. I have a webView, and ... /html", "utf-8"); } See Question&Answers more detail:os...

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

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394 views

1 answer

java - JSF backing bean should be serializable?

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

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345 views

1 answer

.net - Reading emails from Gmail in C#

I am trying to read emails from Gmail. I have tried every API / open source project I can find, and ... ://stackoverflow.com/a/19570553/550198 See Question&Answers more detail:os...

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

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304 views

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javascript - How to use Google sheets API while inside a google cloud function

I'm trying out Google's Cloud Functions service and I want to read and write a Google Spreadsheets but can't ... do something similar to 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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285 views

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sql - Mysql: Order by like?

assume that we are performing search using keywords: keyword1, keyword2, keyword3 there are records in database with ... to create such order? See Question&Answers more detail:os...

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

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180 views

1 answer

iPhone - How set uinavigationbar height?

I want to make the top of the navigation view a bit smaller. How would you achieve this? This is ... blackColor]; [window makeKeyAndVisible]; See Question&Answers more detail:os...

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

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319 views

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python - multiple databases and multiple models in django

I have two databases and two models:the Admin and the user. I want to sync my models to the two databases; ... the two models to two databases? See Question&Answers more detail:os...

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

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406 views

1 answer

iphone - NSDateFormatter returning nil in OS 4.0

I had the following code working on on OS 3.x NSString *stringDate = @"2010-06-21T20:06:36+00:00"; ... methods. What did i leave out? See Question&Answers more detail:os...

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

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