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java - Check if a value exists in ArrayList

How can I check if a value that is written in scanner exists in an ArrayList? List<CurrentAccount> lista = new ArrayList< ... + "%n"); } System.out.println(); Question&Answers:os...

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

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How do I create a datetime in Python from milliseconds?

I can create a similar Date object in Java by java.util.Date(milliseconds). How do I create the comparable in Python? ... namely January 1, 1970, 00:00:00 GMT. Question&Answers:os...

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

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python - ImportError: No Module Named bs4 (BeautifulSoup)

I'm working in Python and using Flask. When I run my main Python file on my computer, it works perfectly ... ." Any comments or advice is greatly appreciated. Question&Answers:os...

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

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java - How do I set a JLabel's background color?

In my JPanel, I set the background of a JLabel to a different color. I can see the word "Test" and ... ; label.setBackground(Color.lightGray); this.add(label); Question&Answers:os...

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

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typescript - Safe navigation operator (?.) or (!.) and null property paths

In Angular 2 templates safe operator ?. works, but not in component.ts using TypeScript 2.0. Also, safe navigation operator (!.) ... (a && a.b && a.b.c) { } Question&Answers:os...

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

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visual studio - Suppressing "is never used" and "is never assigned to" warnings in C#

I have a HTTPSystemDefinitions.cs file in C# project which basically describes the older windows ISAPI for consumption by ... dwReserved; // New in 4.0 } Question&Answers:os...

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

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html - Disable native datepicker in Google Chrome

Date picker landed on Chrome 20, is there any attribute to disable it? My entire system uses jQuery UI ... native datepicker. Is there any tag attribute? Question&Answers:os...

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

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Bootstrap 3 - How to load content in modal body via AJAX?

As you can see here, I have a button that launches a modal. Setting an href url for the button this url is ... content was loaded in the body, not the root. Question&Answers:os...

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

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Android M Camera Intent + permission bug?

I'm trying to get my app ready for the new Android M permissions changes and found some weird behaviour. My ... getMessage(), Toast.LENGTH_SHORT).show(); } } Question&Answers:os...

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

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encryption - Is it possible to hide/encode/encrypt php source code and let others have the system?

Is it possible to hide/encode/encrypt the php file/source code, and let others have the system installed and run on their machine? Question&Answers:os...

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

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wpf - Make ListView.ScrollIntoView Scroll the Item into the Center of the ListView (C#)

ListView.ScrollIntoView(object) currently finds an object in the ListView and scrolls to it. If you are positioned ... there an easy way to accomplish this? Question&Answers:os...

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

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timezone - Convert time and date from one time zone to another in PHP

Basically what I need is an script that, when provided with a time and a timezone can return the time in ... - or is there such a class already available? Question&Answers:os...

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

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c# - Most efficient way to insert Rows into MySQL Database

I've read a lot of questions about that but i couldn't find one that is fast enough. I think there are ... t load the data into a file and MySQLBulkLoad it. Question&Answers:os...

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

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java.util.zip - Recreating directory structure

While trying to zip an archive using the java.util.zip I ran into a lot of problems most of which I solved. ... ) but changing that gives me an empty zip file. Question&Answers:os...

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

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JavaScript/jQuery check broken links

I developed a small Javascript/jQuery program to access a collection of pdf files for internal use. And I ... How? Any guide or suggestion is appropriated. Question&Answers:os...

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

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html - JavaScript get element by name

Consider this function: function validate() { var acc = document.getElementsByName('acc').value; var pass = document. ... is showing, but it shows "undefined". Question&Answers:os...

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

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javascript - Scope of sessionStorage and localStorage

I read some documentation on sessionStorage and localStorage, but I don't understand what the scope is: the ... the values going to overwrite each other? Question&Answers:os...

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

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548 views

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python - Numpy ‘smart’ symmetric matrix

Is there a smart and space-efficient symmetric matrix in numpy which automatically (and transparently) fills the position ... need that at the time of writing. Question&Answers:os...

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

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261 views

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javascript - How to open a new window and insert html into it using jQuery?

I am trying to open a new window from javascript but nothing is being inserted into the html: var ... ).html(callScriptText); Does anyone know why? Question&Answers:os...

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

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c++ - Returning temporary object and binding to const reference

This question already has answers here: Question&Answers:os...

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

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167 views

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java - How to call the overridden method of a superclass?

How can I call the eat and drink method of the Animal class with the myAnimal instance in the code? public ... : Cat Eats Cat Drinks Animal Eats Animal Drinks Question&Answers:os...

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

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c - Shall I prefer constants over defines?

In C, shall I prefer constants over defines? I've reading a lot of code lately, and all of the examples make heavy use of defines. Question&Answers:os...

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

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hibernate - How do you create a Distinct query in HQL

Is there a way to create a Distinct query in HQL. Either by using the "distinct" keyword or some other ... the HQL equivalent of the SQL keyword "distinct". Question&Answers:os...

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

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365 views

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javascript - ES6: Conditional & Dynamic Import Statements

Conditional Is it possible to have conditional import statements like below? if (foo === bar) { import Baz from ... to handle large number of imports in ES6? Question&Answers:os...

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

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python - Pickle or json?

I need to save to disk a little dict object whose keys are of the type str and values are ints and then recover ... or with simplejson? I am using Python 2.6. Question&Answers:os...

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

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263 views

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python - How to convert list of key-value tuples into dictionary?

I have a list that looks like: [('A', 1), ('B', 2), ('C', 3)] I want to turn it into ... : dictionary update sequence element #0 has length 1916; 2 is required Question&Answers:os...

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

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192 views

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python - Why are 0d arrays in Numpy not considered scalar?

Surely a 0d array is scalar, but Numpy does not seem to think so... am I missing something or am I just ... isscalar(foo) False >>> foo.item() 1.11111111111 Question&Answers:os...

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

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html - Chrome Download Attribute not working

I've experienced some unexpected behavior of Chrome since the newest version: While in Firefox this Code is working ... to change that it is working again? Question&Answers:os...

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

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