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ios - How to determine the current iPhone/device model?

Is there a way to get the device model name (iPhone 4S, iPhone 5, iPhone 5S, etc) in Swift? I know there ... me with the equivalent way to solve this in Swift? Question&Answers:os...

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

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76 views

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What is null in Java?

What is null? Is null an instance of anything? What set does null belong to? How is it represented in the memory? Question&Answers:os...

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

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377 views

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syntax - How do I pass multiple parameters into a function in PowerShell?

If I have a function which accepts more than one string parameter, the first parameter seems to get all the ... wrong. Can anyone point out exactly what? Question&Answers:os...

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

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javascript - Stop form refreshing page on submit

How would I go about preventing the page from refreshing when pressing the send button without any data in the fields? The validation ... //////////////// }); Question&Answers:os...

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

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pointers - returning a local variable from function in C

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

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java - When would you use the Builder Pattern?

Closed. This question needs to be more focused. It is not currently accepting answers. Question&Answers:os...

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

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javascript - Get selected text from a drop-down list (select box) using jQuery

How can I get the selected text (not the selected value) from a drop-down list in jQuery? Question&Answers:os...

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

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python - How to fix "Attempted relative import in non-package" even with __init__.py

I'm trying to follow PEP 328, with the following directory structure: pkg/ __init__.py components/ core.py __init__ ... . Is there anything I'm missing here? Question&Answers:os...

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

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python - How to define a two-dimensional array?

I want to define a two-dimensional array without an initialized length like this: Matrix = [][] but it does not ... list index out of range What is my mistake? Question&Answers:os...

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

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.net - Pass Method as Parameter using C#

I have several methods all with the same parameter types and return values but different names and blocks. I want ... code since I need to define the parameter. Question&Answers:os...

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

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628 views

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tslint - In Typescript, what is the ! (exclamation mark / bang) operator when dereferencing a member?

When looking at the sourcecode for a tslint rule, I came across the following statement: if (node.parent!.kind ... mark operator, and how does it work? Question&Answers:os...

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

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c# - LINQ - Full Outer Join

I have a list of people's ID and their first name, and a list of people's ID and their surname. Some people don't ... -- 1 John Doe 2 Sue What am I doing wrong? Question&Answers:os...

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

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regex - Using regular expressions to validate a numeric range

My input number is an int. But the input number must be in a range from -2055 to 2055 and I want to check ... so I should use regex to check the input number Question&Answers:os...

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

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python - How to use glob() to find files recursively?

This is what I have: glob(os.path.join('src','*.c')) but I want to search the subfolders of src. Something ... '*.c')) But this is obviously limited and clunky. Question&Answers:os...

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

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How do I execute a string containing Python code in Python?

How do I execute a string containing Python code in Python? Question&Answers:os...

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

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1 answer

python - Adding value labels on a matplotlib bar chart

I got stuck on something that feels like should be relatively easy. The code I bring below is a ... fig.set_ylabel('Frequency') fig.set_xticklabels(x_labels) Question&Answers:os...

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

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202 views

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Best way to convert string to bytes in Python 3?

There appear to be two different ways to convert a string to bytes, as seen in the answers to TypeError: 'str' does not ... utf-8') b = mystring.encode('utf-8') Question&Answers:os...

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

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162 views

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java - How do I find the caller of a method using stacktrace or reflection?

I need to find the caller of a method. Is it possible using stacktrace or reflection? Question&Answers:os...

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

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130 views

1 answer

javascript - Escaping HTML strings with jQuery

Does anyone know of an easy way to escape HTML from strings in jQuery? I need to be able to pass an ... about the framework at the moment to accomplish this. Question&Answers:os...

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

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88 views

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Reverse a string in Java

I have "Hello World" kept in a String variable named hi. I need to print it, but reversed. How can I ... each individual word of Hello World string with Java Question&Answers:os...

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

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325 views

1 answer

html - Can I nest a <button> element inside an <a> using HTML5?

I am doing the following: <a href="www.stackoverflow.com"> <button disabled="disabled" >ABC</button> </a> This ... anyone give me advice on what I should do? Question&Answers:os...

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

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89 views

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sql server - What is the best way to create and populate a numbers table?

I've seen many different ways to create and populate a numbers table. However, what is the best way to ... should I consider using an auxiliary numbers table? Question&Answers:os...

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

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113 views

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python - ImportError: No module named 'pygame'

I have installed python 3.3.2 and pygame 1.9.2a0. Whenever I try to import pygame by typing: import pygame I ... helped. I have 64 bit machine with Win7 OS Question&Answers:os...

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

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174 views

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git add - Difference between "git add -A" and "git add ."

The command git add [--all|-A] appears to be identical to git add .. Is this correct? If not, how do they differ? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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276 views

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python - How do I use installed packages in PyCharm?

In PyCharm, I've added the Python environment /usr/bin/python. However, from gnuradio import gr fails as an ... :/usr/local/lib/python2.7/site-packages/gnuradio Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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407 views

1 answer

function - How to define method in javascript on Array.prototype and Object.prototype so that it doesn't appear in for in loop

I want to define helper methods on the Array.prototype and Object.prototype. My current plan is to do something like: Array ... won't show up in a for in loop? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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101 views

1 answer

c# - How do I get the path of the assembly the code is in?

Is there a way to get the path for the assembly in which the current code resides? I do not want ... ().Location gives the same as the previous. Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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411 views

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objective c - What's the Best Way to Shuffle an NSMutableArray?

If you have an NSMutableArray, how do you shuffle the elements randomly? (I have my own answer for this, ... , rather than shuffling the elements in place.) Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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