外贸网站建设-英文网页设计,安卓app开发,国际企业网站制作,进销存系统软件开发zh-cn2021-12-06 00:16:43 base64编码、解码的C语言实现 http://www.ndfweb.cn/news-914.html base646426646244base6434base64AZaz0962base64RFC 1421RFC 204543RFC 82276135.1base64243062664ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz012345678912Cbase64Cgccdbase64base64ostdinstdoutbase64base64base64base64includeltstdio.hgtincludeltstdlib.hgtincludeltstring.hgtincludeltunistd.hgtincludelti 2021-10-03 17:35:55 C语言文件的读写 http://www.ndfweb.cn/news-913.html C fgetcfputcfgetsfputsfreedfwritefscanffprinfstdio.hfgetcfputc 1 fgetcfgetc fgetc chfgetcfpfpchfgetcfgetcfgetcfp fgetc fgetc131c1.docincludeltstdio.hgtmainFILEfpcharchiffpfopenquotd:jrzhexamplec1.txtquot,quotrtquotNULLprintfquotnCannotopenfilestrikeanykeyexitquotgetchexit1chfgetcfpwhilechEOFputc 2021-10-01 22:47:22 apache、php隐藏头信息的方法 http://www.ndfweb.cn/news-912.html apacheapache httpd.conf ServerTokensServerSignatureapache HTTP ServerTokens ProductOnlyServerSignature OffApacheApache Version ServerTokensServerSignatureServerSignature OnOffEmailServerTokens MinimalProductOnlyOSFullServerTokens ProductOnlyServer sends e.g.: Server: ApacheServerTokens MinimalSer 2021-09-24 11:42:46 NEMA-0183(GPGGA,GPRMC,GPGSA,GPGSV,GPVTG)详解 http://www.ndfweb.cn/news-911.html nmea GPGGA121252.000,3937.3032N11611.6046E1,05,2.0,45.9M5.7M , 0000 77 GPRMC121252.000A3958.3032N11629.6046E15.15,359.95,070306 , A 54 GPVTG359.95T , M15.15N28.0KA 04 GPGGA121253.000,3937.3090N11611.6057E1,06,1.2,44.6M5.7M , 0000 72 GPGSAA3,14,15,05,22,18,26 , 2.1,1.2,1.7 3D GPGSV3,3,10,29,07,0 2021-09-22 21:52:17 GPS数据包格式+数据解析 http://www.ndfweb.cn/news-910.html 1507.5007.5W7.5E7.5E7.5W15111111172.5E172.5E1801211172.5W172.5W18012127.524121180120EGPS xxxxxxxxxxxxx3939GPRMC,080655.00,A,4546.40891,N,12639.65641,E,1.045,328.42,170809,,,A60GPSGPGSVGPGLLGPRMCGPVTGGPGGAGPSGPGSAGPRMC GPRMC,lt1gt,lt2gt,lt3gt,lt4gt,lt5gt,lt6gt,lt7gt,lt8gt,lt9gt,lt10gt,lt11gt,lt12gthh 2021-09-22 20:38:32 AT命令返回CME ERROR错误代码(WIFI/GPRS中用到) http://www.ndfweb.cn/news-909.html CME ERROR39s GSM Equipment related codesCME ERROR: 58 ATError DescriptionCME ERROR: 0 Phone failureCME ERROR: 1 No connection to phoneCME ERROR: 2 Phone adapter link reservedCME ERROR: 3 Operation not allowedCME ERROR: 4 Operation not supportedCME ERROR: 5 PHSIM PIN requiredCME ERROR: 6 PHFSIM PIN r 2021-09-22 14:16:05 TCP模拟HTTP发送get和post请求 http://www.ndfweb.cn/news-908.html tcplampthinkphp5.0TCPIPgetGET keyvalueampkeyvalue HTTP1.1AcceptLanguage: zhCN,zhq0.9Host:www.baidu.com GETHTTP1.1 Host TCPIPPOSTPOST HTTP1.1AcceptLanguage: zhCN,zhq0.9Host:weixin.yckgyy.cnConnection: keepaliveContentLength:26ContentType:applicationxwwwformurlencodedcharsetUTF8namezhanglinampxing 2021-09-21 21:33:13 学习笔记 篇五:好用的GPS定位软件traccar,强烈推荐!(服务配置篇) http://www.ndfweb.cn/news-907.html Traccar Traccar GPS170GPS1500GPSTraccar HomeAssistantHAVPSTraccar Webhttp:IP:8082 adminTraccar ClientIOSappstroeTraccar Clienthttps:www.traccar.orgclientAPP1IOS2IOSTraccar ClientTraccar Client3Traccar ClientDevice SettingsAndroid8722227TRACCAR 2021-09-20 15:39:52 Arduino - 使用u8glib库操作OLED屏 http://www.ndfweb.cn/news-906.html u8glibgithubhttps:github.comolikrausu8glibfirstPagenextPage u8g.firstPage do while u8g.nextPage 1234setRot90 or 180 or 2701void U8GLIB::setRot90void U8GLIB::setRot180void U8GLIB::setRot2702 90180270123456setFont1U8GLIB::setFontconst u8gfntpgmuint8t font2 3 font123456setFontPosTop1void U8GLIB:: 2021-09-18 15:53:57 string和char*互转 http://www.ndfweb.cn/news-905.html charstringchar aquothelloquotstring sstringa,strlena sastringchar:string squothelloquotchar ps.datachar ps.cstr 2021-09-18 15:25:37 Arduino for ESP8266&ESP32适用库ESPAsyncWebServer:静态文件和模板引擎 http://www.ndfweb.cn/news-904.html WebServerindex.htmlfavicon.ico index.html index.html urlESP32FlashSPIFFSSD AsyncWebServer serveStatic page.htmSPIFFSwwwpage.htmserver.serveStaticquotpage.htmquot, SPIFFS, quotwwwpage.htmquot12 SPIFFSwww page.htmSPIFFSwwwpage.htm favicon.icoSPIFFSwwwfavicon.ico SPIFFSwwwindex.htmserver.serveStati 2021-08-28 22:12:10 Arduino for ESP8266&ESP32适用库ESPAsyncWebServer:快速入门 http://www.ndfweb.cn/news-903.html Arduino for ESP8266 Arduino for ESP32 WebServerWebServerESPAsyncWebServerArduino for ESP8266ampESP32WebServerESPAsyncWebServerhttps:github.commenodevESPAsyncWebServerESP32WebSocketEventSourceURL RewriteServeStaticCacheControlLastModifieddefault indexESPAsyncWebServerPlatformIOArduino IDEESPAsyncWeb 2021-08-28 21:17:51 ESP32-CAM 故障排除指南:修复的最常见问题 http://www.ndfweb.cn/news-902.html ESP32CAM ESP32CAM ESP32CAM ESP32CAMESP32 IP CAM NodeRED MicroSD PIR SPIFFS Web Home AssistantESP32CAM ESP32 0x20001 Guru Sketch too big error COMX COM Psram GPIO isr WiFi Arduino IDE IP espcamerafbget: 1. ESP32 ESP32CAM FTDI ESP32CAM FTDI ESP32CAM GPIO 0GND FTDI 3.3V 5V 5VGPIO 2021-08-28 11:00:25 VS下创建的VB.NET项目SETUP打包发布安装包的流程 http://www.ndfweb.cn/news-901.html release debug :Visual Studio ReleaseDebugVisual Studio Visual Studio PDB 1VB.NETWindows2gtgtgtgtVisual Studio Installergtsetup13setup1setup1gtgt45 6AlwaysCreateTrue7123icoico256256pngicoicoicoPropertyAddRemoveProgramsIconAddRemoveProgramsIcon AuthorAuthor ASPNetVersion Web Internet Information Serv 2021-08-23 17:04:04 VB.NET合并图片 http://www.ndfweb.cn/news-900.html GDIPublic Function MergeImagesByVal Pic1 As Image, ByVal pic2 As Image As Image Dim MergedImage As Image Dim Wide, High As Integer High Pic1.Height pic2.Height If Pic1.Width gt pic2.Width Then Wide Pic1.Width Else Wide pic2.Width End If Dim bm As New BitmapWide, High Dim gr As Grap 2021-08-21 22:48:48 VB.NET BitmapData类代码示例 http://www.ndfweb.cn/news-899.html VB.NETSystem.Drawing.Imaging.BitmapDataVB.NET BitmapDataVB.NET BitmapDataVB.NET BitmapData, BitmapData1VB.NET1: LockUnlockBitsExample 13PrivateSubLockUnlockBitsExampleByValeAsPaintEventArgs39Createanewbitmap.DimbmpAsNewBitmapquotc:fakePhoto.jpgquot39Lockthebitmap39sbits.DimrectAsNewRectangle0,0,bmp. 2021-08-21 22:23:58 BitmapData类介绍 http://www.ndfweb.cn/news-898.html BitmapDataFlashBitmapdataObjectIBitmapDrawableDrawable,IBitmapDrawable BitmapData drawsource BitmapData DisplayObject BitmapDataFLASH IDEFlashCTRLRCTRLBBitmapDataFLASHBitmapDataBitmapDataBitmapDataBitmapDataBitmapDataBitmapdataBitmapaddChildBitmap,BitmapData,,1,,BitmapdataJPEGEncoderBitmapdataBit 2021-08-21 22:07:56 opencv python 图像缩放/图像平移/图像旋转/仿射变换/透视变换 http://www.ndfweb.cn/news-897.html 1OpenCVcv2.warpAffinecv2.warpPerspectivecv2.warpAffine2x3cv2.warpPerspective3x32.OpenCVcv.resize.cv2.resizesrc, dsize, dst, fx, fy, interpolationshrinkinginterpolationcv2.INTERAREAzoominginterpolationcv2.INTERCUBICcv2.INTERLINEARimportnumpyasnpimportcv2imgcv2.imread39messi5.jpg39rescv2.resizeimg,Non 2021-08-19 10:41:35 python opencv minAreaRect 生成最小外接矩形 http://www.ndfweb.cn/news-896.html python opencvcnt cv2.minAreaRectcnt cnt cnt 44cnt np.arrayx1,y1,x2,y2,x3,y3,x4,y4 arrayrect cv2.minAreaRectcnt x,y, ,, box cv2.cv.BoxPointsrect 4ps: cv2.boxPointsrect for OpenCV 3.xbox np.int0box cv2.drawContoursimg, box, 0, 255, 0, 0, 1cv2.imwrite39contours.png39, img cv2.minAreaRect Box2Dre 2021-08-18 00:04:46 OpenCV+python轮廓计算 http://www.ndfweb.cn/news-895.html 1.3x,ycv2.CHAINAPPROXSIMPLEcv2.CHAINAPPROXNONE734cv2.CHAINAPPROXSIMPLE42.2.1cv2.momentsimportnumpyasnpimportcv2imgcv2.imread391024.jpg39,0ret,threshcv2.thresholdimg,127,255,0image,contours,hierarchycv2.findContoursthresh,1,2cntcontours0Mcv2.momentscntprintMcxintM39m1039M39m0039cyintM39m0139M39m00392 2021-08-17 23:03:17 python-opencv利用cv2.findContours()函数来查找检测物体的轮廓 http://www.ndfweb.cn/news-894.html OpenCVPythoncv2.findContoursimport cv2img cv2.imreadquot.test.jpgquotgray cv2.cvtColorimg,cv2.COLORBGR2GRAYret, binary cv2.thresholdgray,127,255,cv2.THRESHBINARYcontours, hierarchy cv2.findContoursbinary,cv2.RETRTREE,cv2.CHAINAPPROXSIMPLEcv2.drawContoursimg,contours,1,0,0,255,3cv2.imshowquotimgq 2021-08-17 23:00:39 FFmpeg常用基本命令行 http://www.ndfweb.cn/news-893.html ffmpeg i video.aviffmpeg i http:static.tripbe.comvideofiles201212149533522808.f4v.mp4httpffmpeg i inputfile vcodec copy an outputfilevideoffmpeg i inputfile acodec copy vn outputfileaudioffmpeg i input.mp4 an output.mp4 ffmpeg i test.avi vcodec copy an output.avi ffmpeg i test.ts acodec copy vc 2021-08-16 21:41:59 HTML5+CSS3基础响应式页面布局 http://www.ndfweb.cn/news-892.html Ethan Marcotte20105vvcss3web1.flexdisplay2.display:flexFlexFlexFlex Flex Flexmain axiscross axisFlexflexdirection: row rowreverse column columnreverseflexdirection:rowflexdirection:rowreverseflexdirection:columnflexdirection:columnreversejustifycontentFlexflexstartflexendcenterspacebetweenspacear 2021-08-13 21:01:29 HyperLPR安装教程 http://www.ndfweb.cn/news-891.html :ubuntu18.04:https:gitee.comzeuseesHyperLPR:ubuntu18.04python3.61.pip3sudo aptget install python3pip2.cmakesudo apt install cmake3.scikitbuildpip3 install scikitbuild4. HyperLPRpython3 m pip install hyperlpr2021,1,25 opencvpython5. opencvpythonsudo pip3 uninstall opencvpython6. opencvpythonpip3 inst 2021-08-12 21:03:38 动态创建selectjs 操作select和option http://www.ndfweb.cn/news-890.html 1.selectfunctioncreateSelectvarmySelectdocument.createElementquotselectquotmySelect.idquotmySelectquotdocument.body.appendChildmySelect2.optionfunctionaddOptionidvarobjdocument.getElementById39mySelect39obj.addnewOptionquotquot,quotquotIEobj.options.addnewOptionquottextquot,quotvaluequotIEfirefox3.o 2021-08-10 15:11:15 Windows设置phpstudy的Apache为开机自启动 http://www.ndfweb.cn/news-889.html phpstudyphpstudyApachebinhttpd.exe k install WinR services.mscApache2.4 2021-08-07 17:22:12 PHP_Study V8在Win10,Win7环境下的开机自动启动方法 http://www.ndfweb.cn/news-888.html 1PHPStudy2shell:startupshell:common startupshell:startup shell:common startup3txt start XXXCOMphpstudypro.exe XXX phpstudy4txtbat shell:common startup phpstudy.batstart min C:phpstudyproCOMphpstudypro.exe 2021-08-07 17:13:31 Windows Server 2012 R2 安装 OpenCV-Python http://www.ndfweb.cn/news-887.html PythonOpencvWindows ServerOpencv. 1. 2. pip install opencvpython 3. conda install opencv ImportError: DLL load failed. DLLDLL opencvpython 2021-08-07 09:25:08 PaddleOCR常见问题汇总 http://www.ndfweb.cn/news-886.html 2021.2.22Q3.1.42: CPUThe setting of ParameterServer must has servernum or serversACPUGPUpython3 toolstrain.py c xxx.ymlGPUdistributed.launchpython3 m paddle.distributed.launch gpus 390,1,2,339 toolstrain.py c xxx.ymlNCCLQ3.1.43StyleTextTextInputStyleInputAStyleTextStyleInputTextInput2StyleInputTextI 2021-08-05 12:00:09 paddleocr package使用说明 http://www.ndfweb.cn/news-885.html 1.1 whlpippipinstallquotpaddleocrgt2.0.1quot2.0.1python3setup.pybdistwheelpip3installdistpaddleocrx.x.xpy3noneany.whlx.x.xpaddleocr2 2.1 paddleocr whlppocr3frompaddleocrimportPaddleOCR,drawocrPaddleocrlangch,en,french,german,korean,japanocrPaddleOCRuseangleclsTrue,langquotchquotneedtorunonlyoncetodo 2021-08-02 15:19:50