小编Jog*_*rge的帖子

如果我们在控制台应用程序上执行以下C#代码,我们将收到一条消息The sums are Not equal.

如果我们在取消注释该行后执行它System.Console.WriteLine(),我们将收到一条消息The sums are equal.

    static void Main(string[] args)
    {
        float f = Sum(0.1f, 0.2f);
        float g = Sum(0.1f, 0.2f);

        //System.Console.WriteLine("f = " + f + " and g = " + g);

        if (f == g)
        {
            System.Console.WriteLine("The sums are equal");
        }
        else
        {
            System.Console.WriteLine("The sums are Not equal");
        }
    }

    static float Sum(float a, float b)
    {
        System.Console.WriteLine(a + b);
        return a + b;
    }

这种行为的实际原因是什么？

我是 GSTreamer 的新手。我尝试使用 GStreamer 上传视频。在运行以下命令时，

gst-launch-1.0 videotestsrc ！udpsink 端口=5200

我收到如下警告。

WARNING: from element /GstPipeline:pipeline0/GstUDPSink:udpsink0: Attempting to send a UDP packets larger than maximum size (115200 > 65507)
Additional debug info:
gstmultiudpsink.c(715): gst_multiudpsink_send_messages (): /GstPipeline:pipeline0/GstUDPSink:udpsink0:
Reason: Error sending message: A message sent on a datagram socket was larger than the internal message buffer or some other network limit, or the buffer used to receive a datagram into was smaller than the datagram itself.
0:00:56.934530706  4912 0000000002F09640 WARN            multiudpsink gstmultiudpsink.c:715:gst_multiudpsink_send_messages:<udpsink0> warning: Attempting …

执行以下命令时

gst-launch-1.0 filesrc location = Wildlife.wmv!decodebin!排队!ffmpegcolorspace!autovideosink dec.!排队!audioconvert!听觉样本!autoaudiosink

我得到如下错误.

ERROR GST_PIPELINE grammar.y:716:priv_gst_parse_yyparse: no element "ffmpegcolorspace"
ERROR GST_PIPELINE grammar.y:801:priv_gst_parse_yyparse: link has no sink [source=@0000000003066F90] 
ERROR GST_PIPELINE grammar.y:801:priv_gst_parse_yyparse: link has no source [sink=@000000000306B060]
ERROR GST_PIPELINE grammar.y:1138:priv_gst_parse_launch: No src-element named "dec" - omitting link
WARNING: erroneous pipeline: no element "ffmpegcolorspace"

这里有什么问题？