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The request was aborted: Could not create SSL/TLS secure channel

...12; // Use SecurityProtocolType.Ssl3 if needed for compatibility reasons And now, it works perfectly. ADDENDUM As mentioned by Robin French; if you are getting this problem while configuring PayPal, please note that they won't support SSL3 starting by December, 3rd 2018. You'll need to use TLS...
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What does 'low in coupling and high in cohesion' mean

I have problems understanding the statement low in coupling and high in cohesion . I have googled and read a lot about this, but still finding it hard to understand. ...
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Linux error while loading shared libraries: cannot open shared object file: No such file or director

... no libpthread_rt.so.1 in that listing. You probably need to re-configure and re-build it so that it depends on the library you have, or install whatever provides libpthread_rt.so.1. Generally, the numbers after the .so are version numbers, and you'll often find that they are symlinks to each othe...
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Copy folder recursively, excluding some folders

...ript that will copy the entire contents of a folder including hidden files and folders into another folder, but I want to exclude certain specific folders. How could I achieve this? ...
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Disable browser's back button

... Do not disable expected browser behaviour. Make your pages handle the possibility of users going back a page or two; don't try to cripple their software. share | improve this answer ...
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Vim multiline editing like in sublimetext?

I started to use gvim, and I can't quite understand how the multiline edit works in gvim. 7 Answers ...
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Different ways of loading a file as an InputStream

...Basically, you have 2 different methods: ClassLoader.getResourceAsStream() and Class.getResourceAsStream(). These two methods will locate the resource differently. In Class.getResourceAsStream(path), the path is interpreted as a path local to the package of the class you are calling it from. For exa...
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What is the difference between Class and Klass in ruby?

What is the difference between Class and Klass? 4 Answers 4 ...
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Where does mongodb stand in the CAP theorem?

... MongoDB is strongly consistent by default - if you do a write and then do a read, assuming the write was successful you will always be able to read the result of the write you just read. This is because MongoDB is a single-master system and all reads go to the primary by default. If y...
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Can hash tables really be O(1)?

... You have two variables here, m and n, where m is the length of the input and n is the number of items in the hash. The O(1) lookup performance claim makes at least two assumptions: Your objects can be equality compared in O(1) time. There will be few ha...