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Why does my JavaScript code receive a “No 'Access-Control-Allow-Origin' header is present on the req

...ferent domain than your page is on. So the browser is blocking it as it usually allows a request in the same origin for security reasons. You need to do something different when you want to do a cross-domain request. A tutorial about how to achieve that is Using CORS. When you are using postman the...
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Portable way to get file size (in bytes) in shell?

... One would guess the portable ls -ln FILE | { read _ _ _ _ size _ && echo "$size"; } needs not fork for the second step of the pipeline, as it uses just built-ins, but Bash 4.2.37 on Linux forks twice (still only one execve, though). – Palec ...
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System.IO.Packaging

...the docs for any of the actual methods/objects/etc. in the namespace, they all say "Assembly: WindowBase.dll" – dlev Aug 31 '11 at 16:39 ...
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How do I join two lines in vi?

...ou join lines as is -- without adding or removing whitespaces: S<Switch_ID>_F<File type> _ID<ID number>_T<date+time>_O<Original File name>.DAT Result: S<Switch_ID>_F<File type>_ID<ID number>_T<date+time>_O<Original File name>.DAT With...
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CSS: background image on background color

...ch I colored blue if this panel is being selected (clicked on it). Additionally, I add a small sign ( .png image) to that panel, which indicates that the selected panel has been already selected before. ...
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Why unsigned integer is not available in PostgreSQL?

I came across this post ( What is the difference between tinyint, smallint, mediumint, bigint and int in MySQL? ) and realized that PostgreSQL does not support unsigned integer. ...
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Select multiple records based on list of Id's with linq

I have a list containing Id's of my UserProfile table. How can i select all UserProfiles based on the list of Id's i got in a var using LINQ ? ...
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How does C compute sin() and other math functions?

...on in C, contributed by IBM. Since October 2011, this is the code that actually runs when you call sin() on a typical x86-64 Linux system. It is apparently faster than the fsin assembly instruction. Source code: sysdeps/ieee754/dbl-64/s_sin.c, look for __sin (double x). This code is very complex. N...
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How can I get dictionary key as variable directly in Python (not by searching from value)?

...f you want to print key and value, use the following: for key, value in my_dict.iteritems(): print key, value share | improve this answer | follow | ...
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How to solve “Could not establish trust relationship for the SSL/TLS secure channel with authority”

Really thought I had this issue fixed, but it was only disguised before. 17 Answers 1...