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javascript - How to listen for changes to the title element?

In Javascript, is there a technique to listen for changes to the title 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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javascript - How to force input to only allow Alpha Letters?

using jQuery here, however unable to prevent numbers from being typed into the input field http://codepen.io/leongaban ... what I'm 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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295 views

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Supporting Amazon and Android market (Google Play) links inside application

So one of my applications was rejected from the Amazon app store today. The reason was because inside my app, ... be from the Amazon Appstore. See Question&Answers more detail:os...

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

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476 views

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c# - How do I maintain ModelState errors when using RedirectToAction?

I have some code that saves a ticket in our system. If there is an error it does a RedirectToAction(). The ... out of the ModelState? 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 - Loading external script with jinja2 template directive

I'm very new to jinja2 and the use of templates in general so I was wondering if there's an easy ... directly from within a template directive? 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 display a one time welcome screen?

In my android app, I need to design a Welcome Screen which will be shown to the user only once after ... to that effect are much 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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Open a selected file (image, pdf, ...) programmatically from my Android Application?

I'm working on an Android application which should be able to open a selected file from a specific folder. I ... How can I figure this 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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php - Create Image From Url Any File Type

I know of imagecreatefromgif(), imagecreatefromjpeg(), and imagecreatefrompng() but is there a way to create an image ... png, not a data url See Question&Answers more detail:os...

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

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variables - How does Java store UTF-16 characters in its 16-bit char type?

According to the Java SE 7 Specification, Java uses the Unicode UTF-16 standard to represent characters. When imagining ... 2-byte "char" 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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OpenShift: How to connect to postgresql from my PC

I have an openshift app, and I just installed a postgresql DB on the same cartridge. I have the postgresql DB ... that I can create new tables. 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++ - Difference between A* pA = new A; and A* pA = new A();

in C++, what is the exact difference between both following dynamic object creations : A* pA = new A ... difference about performance... 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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c# - Possible to use AutoMapper to map one object to list of objects?

These are my classes: public class EventLog { public string SystemId { get; set; } public string UserId { get; ... AutoMapper handle it for me. 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 - How to create a Mongo Docker Image with default collections and data?

I need support here to build my own mongo docker image. I have a list of scripts to create ... Parent Dockerfile Parent Dockerfile ENTRYPOINT See Question&Answers more detail:os...

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

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Random Python dictionary key, weighted by values

I have a dictionary where each key has a list of variable length, eg: d = { 'a': [1, 3, 2], 'b': ... 'a' to be returned roughly half the 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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How does Java's use-site variance compare to C#'s declaration site variance?

My understand is that specifying variance for generics in C# happens at the type declaration level: when you're ... and cons to each option? 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

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coding style - What kind of prefix do you use for member variables?

No doubt, it's essential for understanding code to give member variables a prefix so that they can easily be ... . What about other languages? See Question&Answers more detail:os...

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

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341 views

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Angular 2. How to use array of objects for controls in Reactive Forms

I need to dynamic create textarea for forms. I have the following model: this.fields = { isRequired: true, type ... of objects? This is Plunkr 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 - Get the first and last date of next month in MySQL

How can I get the first and last day of next month to be used in the where clause? See Question&Answers more detail:os...

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

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613 views

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algorithm - how to merge two sorted integer array in place using O(n) time and O(1) space cost

For example, given an integer array and its two consecutive sequence 's beginning position which are 'b1' and 'b2', ... and O(1) space cost? 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++ - understanding the dangers of sprintf(...)

OWASP says: "C library functions such as strcpy (), strcat (), sprintf () and vsprintf () operate on ... overflow Please confirm/deny. 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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369 views

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python - Click Command Line Interfaces: Make options required if other optional option is unset

When writing a command-line interface (CLI) with the Python click library, is it possible to define e.g. three ... == '__main__': login() See Question&Answers more detail:os...

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

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776 views

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ios - Initializer does not override a designated initializer from its superclass

So I've just upgraded to Xcode 6.3 Beta 3 and a lot of error(s) are appearing relating to the ... nibNameOrNil, bundle: nibBundleOrNil) } } See Question&Answers more detail:os...

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

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Why is ruby so much slower on windows?

What are the specific technical causes of Ruby being so much slower on Windows? People report about a 3X speed ... durf Windoze sucks yuk yuks. See Question&Answers more detail:os...

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

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399 views

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python - Triple inheritance causes metaclass conflict... Sometimes

Looks like I stumbled upon a metaclass hell even when I didn't wanted anything to do with it. I'm writing an app in Qt4 ... ----------------/ See Question&Answers more detail:os...

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

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329 views

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python - Conditional Logic on Pandas DataFrame

How to apply conditional logic to a Pandas DataFrame. See DataFrame shown below, data desired_output 0 1 False 1 2 ... would be 'un-pythonic' See Question&Answers more detail:os...

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

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680 views

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comparison - Why is Java's Double.compare(double, double) implemented the way it is?

I was looking at the implementation of compare(double, double) in the Java standard library (6). It reads: public ... to know how this works. See Question&Answers more detail:os...

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

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1.4k views

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cmake - How do you set CMAKE_C_COMPILER and CMAKE_CXX_COMPILER for building Assimp for iOS?

When I try to build Assimp by running build_ios.sh, it tells me: CMake Error: your C compiler: "/Developer/ ... still gives me the same errors. See Question&Answers more detail:os...

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

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787 views

1 answer

css - Changing chunk background color in RMarkdown

I would like to have a certain code chunk highlighted in a different color (e.g. red) to indicate that ... change for the entire document. See Question&Answers more detail:os...

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

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