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“Origin null is not allowed by Access-Control-Allow-Origin” error for request made by application ru
...t. However, your browser supported CORS (Cross-Origin Resource Sharing) to allow cross-domain XMLHttpRequest if the server OKed it. That's where the Access-Control-Allow-Origin header came in.
I believe you mentioned you were running it from a file:// URL. There are two ways for CORS headers to sign...
How to get the last element of a slice?
... Thanks a bunch! Even though it does seem silly they didn't add the -1 index Python has...
– Morgan Wilde
Mar 20 '14 at 15:00
...
How does a garbage collector avoid an infinite loop here?
...nown>:0
at System.IO.StreamWriter.Write (System.Char[] buffer, Int32 index, Int32 count) [0x00000] in <filename unknown>:0
at System.IO.CStreamWriter.Write (System.Char[] buffer, Int32 index, Int32 count) [0x00000] in <filename unknown>:0
at System.IO.CStreamWriter.Write (Sys...
Resize svg when window is resized in d3.js
... For example, viewBox forces axis fonts and ticks to scale up/down, potentially looking awkward compared to html text. In contrast, a re-render enables the chart to keep it's labeling a consistent size, plus it provides an opportunity to add or remove ticks.
– Karim Hernandez
...
Should you commit .gitignore into the Git repos?
...ly do commit .gitignore. In fact, I personally go as far as making sure my index is always clean when I'm not working on something. (git status should show nothing.)
There are cases where you want to ignore stuff that really isn't project specific. For example, your text editor may create automatic...
How do I make the first letter of a string uppercase in JavaScript?
... This won’t work in IE < 8, as those browsers don’t support string indexing. IE8 itself supports it, but only for string literals — not for string objects.
– Mathias Bynens
Feb 14 '12 at 11:33
...
RequestDispatcher.forward() vs HttpServletResponse.sendRedirect()
...be the servlet. From the servlet I do a response.sendRedirect("..") to the index.jsp page of the website. But that misses out the css files and some text from the jsp page,leading to partial load of the page. But when I make the welcome page of the website to be index.jsp , everything works fine and...
Comet implementation for ASP.NET? [closed]
...dows Runtime, and .NET Compact, with server-side support for .NET/Mono and PHP.
Clustering is supported using either SQL Server or Azure Caching out of the box, but custom providers can be written for just about anything (Redis, NCache).
Disclaimer: I work for the company that develops this produc...
how to check the dtype of a column in python pandas
...d.Timestamp('2013-01-02'), pd.Timestamp('2016-10-20')]},
index = ['A', 'B'])
for col in df.columns:
df[col].dtype, 'is_int64 = %s' % isinstance(df.loc['A', col], np.int64)
>>> (dtype('int64'), 'is_int64 = True')
>>> (dtype('<M8[ns]'), 'is_int64 = False')
...
Are braces necessary in one-line statements in JavaScript?
... expands the statement it will be required.
This same practice follows in all C syntax style languages with bracing. C, C++, Java, even PHP all support one line statement without braces. You have to realize that you are only saving two characters and with some people's bracing styles you aren't eve...