That unexpected “u” is the first letter of the string “undefined”. It happens because your two asynchronous operations (i.e. loading the JSON and loading the window) are racing to completion, and if the JSON isn’t loaded fast enough, the window.onload method will attempt to parse the JSON string that isn’t loaded yet. A solution is to move … Read more
The last parameter to the rgba() function is the “alpha” or “opacity” parameter. If you set it to 0 it will mean “completely transparent”, and the first three parameters (the red, green, and blue channels) won’t matter because you won’t be able to see the color anyway. With that in mind, I would choose rgba(0, 0, 0, 0) because: it’s less typing, it keeps a … Read more
Non-numpy way: Use collections.Counter;
When you make a POST request, you have to encode the data that forms the body of the request in some way. HTML forms provide three methods of encoding. application/x-www-form-urlencoded (the default) multipart/form-data text/plain Work was being done on adding application/json, but that has been abandoned. (Other encodings are possible with HTTP requests generated using other means … Read more
I’m trying to run this program But I’m having a problem with numpy, I’m using pyschopy along with opencv. The problem I keep getting is this error report: RuntimeError: module compiled against API version 7 but this version of numpy is 6 Traceback (most recent call last): File “C:\Users\John\Documents\EyeTracking\Programs\GetImage.py”, line 1, in ImportError: numpy.core.multiarray failed … Read more
I’ve seen some code online and I’m trying to work out what it is doing. In particular, I’ve never seen “1e” convention before.
MultiMarkdown Composer does seem to generate a table of contents to assist while editing. There might also be the one or the other library, who can generate TOCs: see Python Markdown TOC Extension.
You probably meant document.getElementsByClassName() (and then grabbing the first item off the resulting node list): You may still get the error document.getElementsByClassName is not a function in older browsers, though, in which case you can provide a fallback implementation if you need to support those older browsers.ShareImprove this answerFollow
The ld returned 1 exit status error is the consequence of previous errors. In your example there is an earlier error – undefined reference to ‘clrscr’ – and this is the real one. The exit status error just signals that the linking step in the build process encountered some errors. Normally exit status 0 means success, and exit status > 0 means errors. … Read more
Your problem is with the (** a) syntactic sugar. The thing is that (elem b) is just the partial application of elem, that is: However when we use back ticks to make elem infix, we get a special syntax for infix operators which works like this: So therefore, while So in the latter case your arguments are in the … Read more