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问题 I am doing the Alien Invasion project in the Python Crash Course book. When I test the code to see if the ship comes on screen the screen starts then shuts down. I have been looking through the code for hours now without finding out why. The game: import sys import pygame from settings import Settings from ship import Ship def run_game(): # Initialize pygame, settings, and screen object pygame.init() ai_settings = Settings() screen = pygame.display.set_mode( (ai_settings.screen_width, ai

问题 Hey there i'm new to three js & was wondering how to cast a shadow with a gltf model? I can see it's possible as it's working here I assume i'm not structuring my code correctly- var model = new THREE.GLTFLoader(); model.load('https://threejs.org/examples/models/gltf/Duck/glTF/Duck.gltf', function(gltf) {scene.add(gltf.scene);}); model.castShadow = true; Here's the fiddle https://jsfiddle.net/steveham/ckpfwy24/87/ Cheers! 回答1: You need to set castShadow = true on each child mesh, like so: var

问题 I need to apply a filter on an attribute of an optional table produced by a left join in scala slick . I could not find any documentation on this or any similar questions online. Consider the following query: val query = FirstTable joinLeft SecondTable on (_.foreignId === _.id) I would like to filter is by an attribute of the SecondTable : query.filter { case (firstTable, secondTableOpt) => secondTableOpt.attribute === "value" } Obviously this does not compile since secondTableOpt is a Rep

问题 I want to remove negative words form sentence using bash script . The negative words that i meant it : [dull,boring,annoying,bad] My file text text.txt contains this sentence : These dull boring cards are part of a chaotic board game ,and bad for people I'm using this script array=( dull boring annoying bad ) for i in "${array[@]}" do cat $p | sed -e 's/\<$i\>//g' done < my_text.txt But I got the following wrong result: These boring cards are part of a chaotic board game ,and bad for people

问题 I have an google app script for Google Sheets. Recently I came across "Script runtime" limitations when my function was inserting data into a spreadsheet over 6 min. My modal window just hung and in the Dev Console I got “Exceeded maximum execution time”. After some researching I figured how to re-implement my function so it would execute in batches and less likely hit the limit. However, at this point I would like add some logic to my script which could centralized catch this limitation and

问题 Hey there i'm new to three js & was wondering how to cast a shadow with a gltf model? I can see it's possible as it's working here I assume i'm not structuring my code correctly- var model = new THREE.GLTFLoader(); model.load('https://threejs.org/examples/models/gltf/Duck/glTF/Duck.gltf', function(gltf) {scene.add(gltf.scene);}); model.castShadow = true; Here's the fiddle https://jsfiddle.net/steveham/ckpfwy24/87/ Cheers! 回答1: You need to set castShadow = true on each child mesh, like so: var

问题 I am doing the Alien Invasion project in the Python Crash Course book. When I test the code to see if the ship comes on screen the screen starts then shuts down. I have been looking through the code for hours now without finding out why. The game: import sys import pygame from settings import Settings from ship import Ship def run_game(): # Initialize pygame, settings, and screen object pygame.init() ai_settings = Settings() screen = pygame.display.set_mode( (ai_settings.screen_width, ai

问题 This question already has answers here : Can I assume (bool)true == (int)1 for any C++ compiler? (4 answers) Closed 6 years ago . Consider the code bool f() { return 42; } if (f() == 1) printf("hello"); Does C (C99+ with stdbool.h) and C++ standards guarantee that "hello" will printed? Does bool a = x; is always equivalent to bool a = x ? 1 : 0; 回答1: In C++, bool is a built-in type. Conversions from any type to bool always yield false (0) or true (1). Prior to the 1999 ISO C standard, C did

问题 I'm trying to write a function which takes an Int and returns all of the prime numbers up to and including that Int. for example "list of primes for 8" = List(3,5,7) This is what I have so far : def isPrime(i: Int): Boolean = { if (i <= 1) false else if (i == 2) true else !(2 to (i - 1)).exists(x => i % x == 0) } //> isPrime: (i: Int)Boolean def getListOfPrimesToN(n : Int) = { } for the function getListOfPrimesToN I plan to 1. create a List "l" of size n and populate it with elements ranging

问题 I am doing the Alien Invasion project in the Python Crash Course book. When I test the code to see if the ship comes on screen the screen starts then shuts down. I have been looking through the code for hours now without finding out why. The game: import sys import pygame from settings import Settings from ship import Ship def run_game(): # Initialize pygame, settings, and screen object pygame.init() ai_settings = Settings() screen = pygame.display.set_mode( (ai_settings.screen_width, ai