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inheritance - When to use val or def in Scala traits?

I was going through the effective scala slides and it mentions on slide 10 to never use val in a trait for ... in a trait for abstract methods See Question&Answers more detail:os...

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

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combobox - HTML combo box with option to type an entry

I was under the impression you could type into a combo box besides selecting any values already in the list. ... to allow typing of text? 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

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ios - Changing the development language in Xcode

I need to set Spanish as development language for an iOS app. I'm already using Xcode 6, and I changed the ... , what am I missing? 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# - Add separator to string at every N characters?

I have a string which contains binary digits. How to separate string after each 8 digit? Suppose the string is: string ... . How can I 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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r - Sort a data.table fast by Ascending/Descending order

I have a data.table with about 3 million rows and 40 columns. I would like to sort this table by descending ... it, setkey is blazing fast. See Question&Answers more detail:os...

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

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optimization - Speed up bitstring/bit operations in Python?

I wrote a prime number generator using Sieve of Eratosthenes and Python 3.1. The code runs correctly and ... of benchmarks on my machine. 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 get the html of a div on another page with jQuery ajax?

I'm using jQuery's ajax code to load new pages, but wanted him to get only the html of a div. My codes: HTML ... on another page. How to do 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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java - Locally declared variables can not be inspected

Sometimes when I am debugging code in Eclipse it happens that although I can see and inspect class member ... light on this behaviour? See Question&Answers more detail:os...

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

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CSS transition with visibility not working

In the fiddle below, I've a transition on visibility and opacity separately. The latter works but the former doesn ... #inner1{ opacity: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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Change the font of tab text in android design support TabLayout

I'm trying to work on the new TabLayout from the android design library. I want to change tab text to custom ... I change the tab text fonts. 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++ - Now that we have std::array what uses are left for C-style arrays?

std::array is vastly superior to the C arrays. And even if I want to interoperate with legacy code, I can ... ever want an old-school array? See Question&Answers more detail:os...

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

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java - javac1.8 class not found

I have installed two jdks - jdk 1.5 and jdk 1.8. I have following Ant build.xml config file : < ... .8 set some configs during installation? 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 - Sort an array so that null values always come last

I need to sort an array of strings, but I need it so that null is always last. For example, the array: ... values, with null always last)? 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 - Summing elements in a list

Here is my code, I need to sum an undefined number of elements in the list. How to do this? l = ... that number of elements is not defined. See Question&Answers more detail:os...

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

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url parsing - Creating a new Location object in javascript

Is it possible to create a new Location object in javascript? I have a url as a string and I would like ... have to create this object 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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427 views

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angular7 - How to set value to form control in Reactive Forms in Angular

Hi Everyone I'm new to angular. Actually, I'm trying to subscribe data from a service and that data, I' ... reactive form. Please suggest 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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147 views

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c# - How do I route images using ASP.Net MVC routing?

I upgraded my site to use ASP.Net MVC from traditional ASP.Net webforms. I'm using the MVC routing to ... using the .MapRoute() method? See Question&Answers more detail:os...

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

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359 views

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multithreading - Display progress bar while doing some work in C#?

I want to display a progress bar while doing some work, but that would hang the UI and the progress bar ... freezing but refreshes the marque) See Question&Answers more detail:os...

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

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128 views

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php - How to efficiently find the closest locations nearby a given location

I'm making a script where a load of business are loaded into a mySQL database with a latitude and longitude. ... They're all 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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list - How to merge YAML arrays?

I would like to merge arrays in YAML, and load them via ruby - some_stuff: &some_stuff - a - b - c ... do I merge arrays in YAML? See Question&Answers more detail:os...

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

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320 views

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python - Efficient way to remove keys with empty strings from a dict

I have a dict and would like to remove all the keys for which there are empty value strings. metadata = {u' ... the best 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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157 views

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JavaScript replace/regex

Given this function: function Repeater(template) { var repeater = { markup: template, replace: function( ... alert is $TEST_ONE $TEST_ONE. See Question&Answers more detail:os...

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

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1.3k views

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ajax - jQuery's .on() method combined with the submit event

I've got a problem with .on(). I have multiple form-elements (forms with class="remember"), also I add another ... is the problem? Is it a bug? See Question&Answers more detail:os...

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

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195 views

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python - Numpy: find index of the elements within range

I have a numpy array of numbers, for example, a = np.array([1, 3, 5, 6, 9, 10, 14, 15, 56]) I ... . Is there a built-in function 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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python - How can I "zip sort" parallel numpy arrays?

If I have two parallel lists and want to sort them by the order of the elements in the first, it' ... them into conventional Python lists? See Question&Answers more detail:os...

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

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240 views

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c - Static allocation of opaque data types

Very often malloc() is absolutely not allowed when programming for embedded systems. Most of the time I'm ... to create multiple instances). See Question&Answers more detail:os...

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

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206 views

1 answer

String similarity algorithms?

I need to compare 2 strings and calculate their similarity, to filter down a list of the most similar ... more string similarity algorithms? See Question&Answers more detail:os...

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

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2.0k views

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json - How to modify JsonNode in Java?

I need to change a JSON attribute's value in Java, I can get the value properly but I couldn't modify the JSON. ... is the best 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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