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typescript restrict count of object's properties

Is it possible to restrict the count of object properties, say I want to restrict object have only one string ... also the count of properties? See Question&Answers more detail:os...

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unix - What's the difference between ${varname} and $varname in a shell scripts

I have a simple question but I wonder what is the difference between ${varname} and $varname ? I use both but I ... to use one or the other. See Question&Answers more detail:os...

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c++ - What am I allowed to do with a static, constexpr, in-class initialized data member?

This is probably a bit of an unusual question, in that it asks for a fuller explanation of a short answer ... you can in-class initialize it? See Question&Answers more detail:os...

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java - Make splash screen with progress bar like Eclipse

My main class loads configuration from a file then shows a frame. I want to make a splash screen with a progress bar ... // show frame 2 } } } See Question&Answers more detail:os...

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Paging on Google Places API returns status INVALID_REQUEST

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Is the hasOwnProperty method in JavaScript case sensitive?

Is hasOwnProperty() method case-sensitive? Is there any other alternative case-insensitive version of hasOwnProperty? See Question&Answers more detail:os...

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installation - Python Cannot install module spaCy

I′m new to python and I ran into a problem I can′t solve. I would like to install and use the package ... Windows and python version 3.7.0b4 See Question&Answers more detail:os...

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c - Memory Leaks in GTK hello_world program

So... I'm trying to eliminate some memory leaks from my GTK+ 3 program. I though it would be a good idea to ... */ gtk_main (); return 0; } See Question&Answers more detail:os...

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ruby - Parsing a date that can be in several formats in python

I would like to parse a date that can come in several formats, that I know beforehand. If I could not parse, ... I do the same thing in Python? See Question&Answers more detail:os...

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PHP removing html tags from string

I have string: <p justify;"="">Vers-lo cent-rai Lie-tu-vos ne-kil-no-ja-mo-jo turto pl?t-ros aso-cia-ci-jos ... string(0) "" , what I do wrong ? See Question&Answers more detail:os...

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Java ArrayList remove object - IndexOutOfBoundsException

I am trying to remove an object from an ArrayList, but I keep getting an IndexOutOfBounds Error. Now there is ... answer of the other question. See Question&Answers more detail:os...

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javascript - TFS 2015 REST API Authentication

We are trying to invoke the TFS 2015 REST API's from a web-page using Javascript and have a challenge in ... edit TFS workitems from REST API. See Question&Answers more detail:os...

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javascript - Set cursor to specific position on specific line in a textarea

I am trying to somewhat duplicate the "autocorrect" functionality seen in programs like Microsoft Office's Outlook. ... 't understand the issue See Question&Answers more detail:os...

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css - How to hide canvas content from parent rounded corners in any webkit for Mac?

I have a parent div with rounded corners that contains a canvas: <div id="box"> <canvas width="300px" ... in Chrome on Win7 jsFiddle here See Question&Answers more detail:os...

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Adding two values in Sass function creates double instance of 'px'

I have a custom function in Sass that takes an em value, strips the unit and creates a px value: @function ... to be added: right: 36px; See Question&Answers more detail:os...

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r - How to order my dataframe lexicographicaly

I have a following data frame a = data.frame(a=c(1,2,3,4,5,6,7),b=c(1,2,3,10,12,21,4),c=c(1,2,10,11,"X","Y ... 3 10 6 4 10 11 7 5 12 X 3 6 21 Y See Question&Answers more detail:os...

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c# - AspNet core web Api usage of ApiControllerAttribute

When I create a new controller in the API project, it generates a controller class with [ApiController] attribute, ... the real-life example? See Question&Answers more detail:os...

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generics - Specify `Fn` trait bound on struct definition without fixing one of the `Fn` parameters

I have a struct that contains a function object: struct Foo<F> { func: F, } I want to add an Fn ... impl blocks, the compiler has difficulties. See Question&Answers more detail:os...

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oop - C++ Double Dispatch for Equals()

Imagine I have abstract base class Shape, with derived classes Circle and Rectangle. class Shape {}; class Circle : ... well enough to know why. See Question&Answers more detail:os...

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java - How to handle Spring Boot's redirection to /error?

I've encountered the same issue as in this question, using Spring Boot 1.3.0 and not having my controllers ... I do with my exception handling? See Question&Answers more detail:os...

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delphi - How to split string by a multi-character delimiter?

Is there a Delphi function to split string by a multi-character delimiter rather than a single character ? For ... in Delphi for this ? See Question&Answers more detail:os...

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apache spark - Saving dataframe to local file system results in empty results

We are running spark 2.3.0 on AWS EMR. The following DataFrame "df" is non empty and of modest size: scala> df. ... Hive 2.3.2, Zeppelin 0.7.3 See Question&Answers more detail:os...

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c++ - ptr->hello(); /* VERSUS */ (*ptr).hello();

I was learning about C++ pointers and the -> operator seemed strange to me. Instead of ptr->hello(); one ... case or is there any difference? See Question&Answers more detail:os...

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json - Merging JSONB values in PostgreSQL?

Using the || operator yields the following result: select '{"a":{"b":2}}'::jsonb || '{"a":{"c":3}}'::jsonb ; ... b": false, "z": false}} (1 row) See Question&Answers more detail:os...

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How to avoid an out of memory error while using bitmaps in Android

I am using bitmaps. When the code runs it shows an out of memory error. How can the error be avoided. My code ... width / (float)reqWidth); } } See Question&Answers more detail:os...

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wpf - Binding errors not showing on output window

My output window does not show binding errors for my project. However on a colleagues machine, binding errors are ... is an IDE setting). See Question&Answers more detail:os...

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asp.net - IMG SRC tags and JavaScript

Is it possible to call a JavaScript function from the IMG SRC tag to get an image url? Like this: <IMG SRC=" ... This is using .NET 2.0. See Question&Answers more detail:os...

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php - Does memcached.dll exist?

Does the memcached (not memcache) extension exist for Windows? I have looked through old answers and haven't found anything. See Question&Answers more detail:os...

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