例如:not logged_in 表示未登录状态 这些运算符可以嵌套使用,注意优先级:not 高于 and 高于 or,复杂表达式建议加括号明确逻辑。
示例:测试一个异步日志写入函数 func TestAsyncLogWrite(t *testing.T) { var logOutput string var mu sync.Mutex var wg sync.WaitGroup <pre class="brush:php;toolbar:false;"><pre class="brush:php;toolbar:false;">// 模拟异步写日志 wg.Add(1) go func() { defer wg.Done() time.Sleep(10 * time.Millisecond) // 模拟处理延迟 mu.Lock() logOutput = "user logged in" mu.Unlock() }() // 等待异步任务完成 wg.Wait() // 断言结果 if logOutput != "user logged in" { t.Errorf("expected 'user logged in', got '%s'", logOutput) }} 注意:共享变量需配合 sync.Mutex 防止数据竞争。
然后在浏览器中访问http://localhost/info.php,如果能看到PHP的信息页面,说明PHP已经成功安装并配置好了。
插入位置通常有三种:头部插入、尾部插入、中间指定位置插入。
elif response.status_code == 200:: 如果上述条件不满足(即响应内容中没有“页面不可用”的提示),并且HTTP状态码是200,那么我们就可以合理地推断该页面是存在的,并返回其URL。
Canonical URL: 使用Canonical URL告诉搜索引擎哪个URL是首选的。
如果后续代码依赖于数组的内部指针位置,这可能会引入难以调试的问题。
有新消息时,通过广播通道(channel)将内容推送给该群组内所有成员。
360鸿图 360公司推出的AI绘画生成工具 24 查看详情 import pandas as pd # 创建示例 DataFrame data = {'date': ['2009-01-01', '2009-01-02', '2009-01-03', '2009-01-04', '2009-01-05', '2009-01-06', '2009-01-07', '2009-01-08', '2009-01-09', '2009-01-10', '2009-01-11', '2009-01-12'], 'value': [886.0, 884.2, 882.1, 882.6, 883.4, 889.1, 887.6, 882.5, 879.7, 878.3, 876.6, 875.2]} df = pd.DataFrame(data) # 使用 mod() 函数限制数值 df['modulo'] = df['value'].mod(360) print(df)输出: date value modulo 0 2009-01-01 886.0 166.0 1 2009-01-02 884.2 164.2 2 2009-01-03 882.1 162.1 3 2009-01-04 882.6 162.6 4 2009-01-05 883.4 163.4 5 2009-01-06 889.1 169.1 6 2009-01-07 887.6 167.6 7 2009-01-08 882.5 162.5 8 2009-01-09 879.7 159.7 9 2009-01-10 878.3 158.3 10 2009-01-11 876.6 156.6 11 2009-01-12 875.2 155.2性能考虑 对于大型 DataFrame,使用向量化操作(如 % 运算符或 mod() 函数)比循环遍历每一行要快得多。
XSLT(Extensible Stylesheet Language Transformations)是一种用于将XML文档转换为其他格式(如HTML、文本或其他XML结构)的语言。
该函数可以在一个逗号分隔的字符串中查找指定的值。
20 查看详情 POST /surveys — 创建问卷 GET /surveys/:id — 获取问卷详情 POST /surveys/:id/submit — 提交回答 GET /surveys/:id/results — 查看统计结果 示例创建问卷处理函数: func CreateSurvey(c *gin.Context) { var survey Survey if err := c.ShouldBindJSON(&survey); err != nil { c.JSON(400, gin.H{"error": err.Error()}) return } survey.ID = generateID() // 简单可用uuid或随机字符串 if err := SaveSurvey(&survey); err != nil { c.JSON(500, gin.H{"error": "保存失败"}) return } c.JSON(201, survey) } 并发提交与数据安全 问卷系统可能面临大量用户同时提交的情况。
示例代码修改: 主窗口 (choose_skin_theme 函数中):import tkinter as t from tkinter import ttk, messagebox import sv_ttk # 尽管我们绕过它的高级功能,但为了示例完整性保留 import os import json import webbrowser from PIL import Image, ImageTk # 假设你已安装 Pillow import pygame as p # 假设你已安装 pygame # 假设 SKIN, THEME, COLORS, FRAMES_PER_SQUARE, PROMOTION_PIECE 是全局变量 SKIN = "Default" THEME = "Default" COLORS = [p.Color(240, 217, 181), p.Color(181, 136, 99)] FRAMES_PER_SQUARE = 1 PROMOTION_PIECE = "" # 模拟 ntkutils.dark_title_bar 函数,如果实际项目中没有,可以忽略或自行实现 def dark_title_bar(window): try: window.tk.call('wm', 'iconphoto', window._w, t.PhotoImage(file='images/game/icon.ico')) window.tk.call('source', 'images/THEME/sun-valley.tcl') # 加载主题脚本 window.tk.call('set_theme', 'dark') # 设置为暗色主题 except Exception as e: print(f"Error applying dark title bar or theme: {e}") def choose_skin_theme(): """ Display a GUI window to allow the user to choose the skin and theme for the chessboard. Updates global variables SKIN, THEME, and COLORS. """ def load_chess_data(file_path): if not os.path.isfile(file_path): return {} with open(file_path, 'r') as file: chess_data = json.load(file) return chess_data def show_last_moves(): file_path = ".moves_log.json" if not os.path.isfile(file_path): messagebox.showerror("ERROR", "No data to show.") return chess_data = load_chess_data(file_path) if chess_data: show_chess_data(chess_data) else: print("Error loading chess data from the file or no data to show.") def apply_selection(): global SKIN, THEME, COLORS, FRAMES_PER_SQUARE SKIN = skin_combo.get() THEME = theme_combo.get() if THEME == 'Default': COLORS = [p.Color(240, 217, 181), p.Color(181, 136, 99)] elif THEME == 'Dark': COLORS = [p.Color(150, 150, 150), p.Color(50, 50, 50)] elif THEME == 'Green': COLORS = [p.Color(238, 238, 210), p.Color(118, 150, 86)] FRAMES_PER_SQUARE = int(anim_combo.get()[0]) shutdown_ttk_repeat() def shutdown_ttk_repeat(): root.eval('::ttk::CancelRepeat') root.destroy() def open_github(): webbrowser.open("https://github.com/t0ry003/GoodChess") def show_chess_data(chess_data): top = t.Toplevel() # ntkutils.dark_title_bar(top) # 替换为手动主题设置 # --- 手动主题设置开始 --- try: top.tk.call('source', 'images/THEME/sun-valley.tcl') # 加载主题脚本 top.tk.call('set_theme', 'dark') # 设置为暗色主题 except Exception as e: print(f"Error setting theme for Toplevel: {e}") # --- 手动主题设置结束 --- top.title("Data Viewer") top.iconbitmap("images/game/icon.ico") top_window_width = 280 top_window_height = 250 top_screen_width = top.winfo_screenwidth() top_screen_height = top.winfo_screenheight() top_x_position = (top_screen_width - top_window_width) // 2 top_y_position = (top_screen_height - top_window_height) // 2 top.geometry(f"{top_window_width}x{top_window_height}+{top_x_position}+{top_y_position}") tree = ttk.Treeview(top, columns=('No', 'Player', 'Move'), show='headings', style='Treeview') tree.heading('No', text='No', anchor='center') tree.heading('Player', text='Player', anchor='center') tree.heading('Move', text='Move', anchor='center') scroll = ttk.Scrollbar(top, orient='vertical', command=tree.yview) for move in chess_data: tree.insert('', 'end', values=(move['number'], move['player'], move['move'])) tree.column('No', width=30) tree.column('Player', width=100) tree.column('Move', width=100) tree.configure(yscrollcommand=scroll.set) scroll.pack(side='right', fill='y') tree.pack(side='left', fill='both', expand=True) top.mainloop() global SKIN, THEME, COLORS, FRAMES_PER_SQUARE root = t.Tk() # ntkutils.dark_title_bar(root) # 替换为手动主题设置 # --- 手动主题设置开始 --- try: root.tk.call('source', 'images/THEME/sun-valley.tcl') # 加载主题脚本 root.tk.call('set_theme', 'dark') # 设置为暗色主题 except Exception as e: print(f"Error setting theme for root: {e}") # --- 手动主题设置结束 --- root.title("Good Chess | Settings") root.iconbitmap("images/game/icon.ico") window_width = 350 window_height = 625 screen_width = root.winfo_screenwidth() screen_height = root.winfo_screenheight() x_position = (screen_width - window_width) // 2 y_position = (screen_height - window_height) // 2 root.geometry(f"{window_width}x{window_height}+{x_position}+{y_position}") # 确保图片路径正确,并处理图像加载错误 try: main_logo = ImageTk.PhotoImage(Image.open("./images/GAME/icon.ico").resize((150, 150))) except FileNotFoundError: print("Warning: icon.ico not found. Using a placeholder or no image.") main_logo = None # 或者创建一个空白图片 try: play_icon = t.PhotoImage(file='./images/GAME/play-icon.png') except FileNotFoundError: print("Warning: play-icon.png not found. Using text only for button.") play_icon = None skin_label = ttk.Label(root, text="Choose Skin:") skin_combo = ttk.Combobox(root, values=["Default", "Fantasy", "Minimalist"]) skin_combo.set(SKIN) theme_label = ttk.Label(root, text="Choose Theme:") theme_combo = ttk.Combobox(root, values=["Default", "Dark", "Green"]) theme_combo.set(THEME) anim_label = ttk.Label(root, text="Choose Animation Speed:") anim_combo = ttk.Combobox(root, width=1, values=["1 (FAST)", "2", "3", "4", "5", "6", "7", "8", "9 (SLOW)"]) anim_combo.set(FRAMES_PER_SQUARE) logo_label = ttk.Label(root, image=main_logo) if main_logo else ttk.Label(root, text="Logo") apply_button = ttk.Button(root, text="START", command=apply_selection, image=play_icon, compound=t.LEFT) if play_icon else ttk.Button(root, text="START", command=apply_selection) show_moves_button = ttk.Button(root, text="Show Last Moves", command=show_last_moves) github_button = ttk.Button(root, text="\u2B50 GitHub", command=open_github) logo_label.pack(pady=10) skin_label.pack(pady=10) skin_combo.pack(pady=10) theme_label.pack(pady=10) theme_combo.pack(pady=10) anim_label.pack(pady=10) anim_combo.pack(pady=10) apply_button.pack(pady=20) show_moves_button.pack(pady=10) github_button.pack(side=t.LEFT, padx=10, pady=10) # sv_ttk.use_dark_theme() # <- 移除此行,因为它可能导致问题 root.protocol("WM_DELETE_WINDOW", shutdown_ttk_repeat) root.mainloop() # 模拟 pygame.Color 类,如果实际项目中没有,可以忽略 class Color: def __init__(self, r, g, b): self.r = r self.g = g self.b = b if 'p' not in globals(): # 如果 pygame 未导入,则定义一个简单的 Color 类 class p: class Color: def __init__(self, r, g, b): self.r, self.g, self.b = r, g, b # 确保在调用 choose_skin_theme 之前设置好全局变量的初始值 if 'SKIN' not in globals(): SKIN = "Default" if 'THEME' not in globals(): THEME = "Default" if 'COLORS' not in globals(): COLORS = [p.Color(240, 217, 181), p.Color(181, 136, 99)] if 'FRAMES_PER_SQUARE' not in globals(): FRAMES_PER_SQUARE = 1 # 如果要运行测试,请取消注释下一行 # choose_skin_theme()弹出窗口 (askPawnPromotion 函数中):import tkinter as t from tkinter import ttk # 确保导入 ttk # 假设 PROMOTION_PIECE 是全局变量 PROMOTION_PIECE = "" def askPawnPromotion(): """ Ask the player which piece to promote the pawn to. """ def apply_selection(): global PROMOTION_PIECE PROMOTION_PIECE = promotion_combo.get() popup.destroy() # popup.quit() # 在 Toplevel 窗口中通常不需要调用 quit() global PROMOTION_PIECE popup = t.Tk() # 这里使用 Tk() 而不是 Toplevel(),这会创建一个新的 Tcl 解释器 # ntkutils.dark_title_bar(popup) # 替换为手动主题设置 # --- 手动主题设置开始 --- try: popup.tk.call('source', 'images/THEME/sun-valley.tcl') # 加载主题脚本 popup.tk.call('set_theme', 'dark') # 设置为暗色主题 except Exception as e: print(f"Error setting theme for popup: {e}") # --- 手动主题设置结束 --- popup.title("Good Chess | Pawn Promotion") popup.iconbitmap("images/GAME/icon.ico") window_width = 350 window_height = 200 screen_width = popup.winfo_screenwidth() screen_height = popup.winfo_screenheight() x_position = (screen_width - window_width) // 2 y_position = (screen_height - window_height) // 2 popup.geometry(f"{window_width}x{window_height}+{x_position}+{y_position}") promotion_label = ttk.Label(popup, text="Choose a piece to promote the pawn to:") promotion_combo = ttk.Combobox(popup, values=["Queen", "Rook", "Bishop", "Knight"]) promotion_combo.set("Queen") apply_button = ttk.Button(popup, text="APPLY", command=apply_selection) promotion_label.pack(pady=10) promotion_combo.pack(pady=10) apply_button.pack(pady=20) # sv_ttk.use_dark_theme() # <- 移除此行 popup.mainloop() return PROMOTION_PIECE[0] # 如果要运行测试,请取消注释下一行 # if __name__ == "__main__": # piece = askPawnPromotion() # print(f"Chosen promotion piece: {piece}")注意事项: 确保 images/THEME/sun-valley.tcl 路径是正确的,相对于你的脚本执行位置。
处理远程 URL 文件上传 Discord Webhook 不支持直接从一个外部 URL 拉取文件进行上传。
什么是友元函数 友元函数不是类的成员函数,但它被声明为类的“朋友”,因此可以访问该类的所有成员,包括私有成员。
示例代码: #include <iostream> #include <string> <p>int main() { std::string str = "Hello world!"; size_t pos = str.find("world"); if (pos != std::string::npos) { str.replace(pos, 5, "C++"); } std::cout << str << std::endl; // 输出: Hello C++! return 0; }</p>说明: - find返回子串首次出现的位置,未找到返回std::string::npos。
相反,它可能是一个“胶水”函数,其作用是调用包内的一个未导出的Go函数。
可导出的关键指标包括: 火山方舟 火山引擎一站式大模型服务平台,已接入满血版DeepSeek 99 查看详情 请求延迟分布(P50、P95、P99) 每秒请求数(QPS) 堆内存使用量与分配速率 GC暂停时间与频率 Goroutine数量变化趋势 使用 expvar 或 Prometheus client_golang 注册自定义指标。
在reCAPTCHA渲染后,当用户完成验证时,reCAPTCHA会回调一个JavaScript函数,您需要在该函数中获取token并发送AJAX请求到服务器进行验证。
这种松散的耦合,让代码变得更灵活、更容易维护。
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