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I'm trying to create an NSTimer in Swift but I'm having some trouble. NSTimer(timeInterval: 1, target: self, ... I can't find a solution in the references. Question&Answers:os...

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

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426 views

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Wait until page is loaded with Selenium WebDriver for Python

I want to scrape all the data of a page implemented by a infinite scroll. The following python code works. ... finished loading. This is more time efficient. Question&Answers:os...

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

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186 views

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Not able to install Python packages [SSL: TLSV1_ALERT_PROTOCOL_VERSION]

I am trying to install a Python library using pip, getting an SSL error: ~/projects/base  pre-master pip install xdict ... pip 9.0.1 How do I fix this error? Question&Answers:os...

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

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414 views

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windows server 2008 r2 - PowerShell says "execution of scripts is disabled on this system."

I am trying to run a cmd file that calls a PowerShell script from cmd.exe, but I am getting this error: ... is Windows Server 2008R2. 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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php - Difference between require, include, require_once and include_once?

In PHP: When should I use require vs. include? When should I use require_once vs. include_once? Question&Answers:os...

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

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134 views

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Image comparison - fast algorithm

I'm looking to create a base table of images and then compare any new images against that to determine ... then randomly pick 100 pixel locations and compare. Question&Answers:os...

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

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224 views

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python - Why is __init__() always called after __new__()?

I'm just trying to streamline one of my classes and have introduced some functionality in the same style as the ... : NEW INIT EXISTS INIT EXISTS INIT Why? Question&Answers:os...

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

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193 views

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objective c - How do I set up NSZombieEnabled in Xcode 4?

How do I set up NSZombieEnabled and CFZombieLevel for my executable in Xcode 4? Question&Answers:os...

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

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How can I check for "undefined" in JavaScript?

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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How to change the status bar color in Android?

First of all it's not a duplicate as in How to change the background color of android status bar How do I ... bar color to be same as the navigation bar color Question&Answers:os...

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

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213 views

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python - How to merge lists into a list of tuples?

What is the Pythonic approach to achieve the following? # Original lists: list_a = [1, 2, 3, 4] list_b = ... is from list_a and the second is from list_b. Question&Answers:os...

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

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183 views

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scala - How to pivot Spark DataFrame?

I am starting to use Spark DataFrames and I need to be able to pivot the data to create multiple columns ... something in Scala, it is greatly appreciated. Question&Answers:os...

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

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115 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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315 views

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python - How do I use subprocess.Popen to connect multiple processes by pipes?

How do I execute the following shell command using the Python subprocess module? echo "input data" | awk -f ... to solve that problem in the first place! Question&Answers:os...