unexpected error with beats input plugin
previously i used json data from a file (that were previously taken by beats) to test my logstash conf and filtering. i had no problems, but when i try to read straight from auditbeat with the beats input plugin, logstash prints few errors and also the output doesn't appear.

here is sample of the e…
so the solution to my problem was that beats input plugin does not put the data into a "message" field as file input does.
really weird. after disabling all of my plugins, then enabling them one by one (and restarting octoprint each time), files load fine now with all plugins enabled. my backend is octopi and it's running on a pi 2. never had any issues before upgrading but now seems to be working for the moment with… > 
> My question is when does this function works improperly and why?
> 
> 
> 


Technically it works improperly when you call it with an input stream or an update stream in input mode. That is, if you use fopen() with a "w" mode, or a "+" mode and you're currently in the process of reading from the stream, or stdin.


In practice, all of the above situations are okie dokie *iff* the compiler supports them (and some do, including Borland and Microsoft compilers). In terms of best practice, fflush() on an input stream is frowned upon.


However, note that calling fflush() on an output stream is both well defined and recommended for things such as forcing a user prompt to display, well...promptly. :)



> 
> Nowadays I use scanf("[^\n]") to flush input stream. Is this ok?
> 
> 
> 


Close. The correct call for scanf() to read up to a newline would be:



```
scanf("%*[^\n]");

```

This isn't complete though, because the newline will still be in the stream. You still need to extract it. One way would be to add an ignored character match in the format string:



```
scanf("%*[^\n]%*c");

```

This might not be as flexible though, if you want to do other stuff like count discarded characters. Another way would be to call getchar() after scanf():



```
scanf("%*[^\n]");
getchar();

```

Finally, there's the far more common (and faster!) method of calling getchar() in a loop. I'll even give you a function that you can call instead of having to write it ad hoc every time:



```
#include <stdio.h>

void clear_line(FILE *in)
{
    int ch;

    /* Do nothing if the stream is in an error state */
    if (ferror(in))
        return;

    /* Make sure any end-of-file  state is cleared */
    clearerr(in);

    /* Extract and discard up to a newline or end-of-file */
    do
        ch = getc(in);
    while (ch != '\n' && ch != EOF);

    /*
        Clear an end-of-file state if we stoped on EOF,
        but leave any legitimate error state for the caller
    */
    if (!ferror(in))
        clearerr(in);
}

```

Note that even this solution is incomplete when compared with what people expect from `fflush(stdin)` because it blocks for input when the stream is empty. fflush(), when flushing input streams is supported, will return without blocking on an empty stream. Unfortunately, there's no portable way to emulate that behavior, but it's fairly simple to just ensure that the stream is never empty when calling clear\_line().



> 
> fflush( std::cout );
> 
> 
> 


Yeah, that won't work. fflush() expects a pointer to FILE, not an std::ostream object. std::ostream has its own flush() member for synchronizing with the destination device.


It's also quite silly to flush cout explicitly prior to accepting input through cin because the two are tied together. As soon as you request input from cin, the tied stream (cout) is automatically flushed. Doing it yourself explicitly isn't harmful, but it *is* redundant.


It's actually a pretty nifty feature of the iostream library. Read more about it starting [here](http://www.cplusplus.com/reference/iostream/ios/tie/). oh my god … i have to appologize very, very much for wasting your time. as so often the problem is sitting in front of the screen :frowning:

i am using certbot inside a script where i make a backup of the /etc/letsencrypt folder, stops apache, on so on …

my mistake is, that my backup of /etc/letse… >>when I compile, there are no errors,  

Ditch the compiler and use a different one. There is a link error.



>>void print ()



Wrong. should be `void testClass::print ()` in case this is of further interest to anyone: i made some minor modifications to [@joels](/u/joels)' code to fetch the predicted values (plus cis) from effects only, which can then be fed into a ggplot. as long as ggeffects does not display confidence intervals, this allows to use the internally consistent pre… The first few errors in the log point to conflicting processes. Can you try ruling these out. For a list of possible conflicting processes, see <https://helpx.adobe.com/enterprise/package/help/resolving-process-conflicts.html> ><snip angsty whining> I am supposed to read numbers out  

>of a file piano.data and put the results into report.out.  

How are the results to be formatted? Give us an example run of the program.



>The piano file is structured like this  

Exactly like that? Or are you adding your own commentary? The difference is in how you parse the data, and that's a pretty big difference. [@barryfm](/u/barryfm) i understand your issue, no need to repeat yourself both here and at the pr. i’ve just tested mailnag with a gmail account and with the online-accounts plugin disabled: i created the account, rebooted and i was able to see the account there again and had no passwords errors.

[image] bar… its to do with the jit optimisation, the same is true if you insert conditional debug statement in the code, matlab needs to prepare to stop execution. hi sheeeng.  thank you for reporting this to us.  we looked into that file and verified that there is a false detection indeed.  we have fixed this already and the fix should go out soon on the next database releases.

 

thank you again for you report! 

 

 

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