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Detecting that the browser has no mouse and is touch-only

...e the following options: /* The primary input mechanism of the device includes a pointing device of limited accuracy. */ @media (pointer: coarse) { ... } /* The primary input mechanism of the device includes an accurate pointing device. */ @media (pointer: fine) { ... } /* T...
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How are ssl certificates verified?

...ert from Bob Smith - well Bob Smith can sign a certificate for any domain (including google.com and chase.com). This is actually why GoDaddy/Verisign pay big money to be included in the OS - they are vetted by a security outfit to ensure that they have checks in place to make sure they don't sign a ...
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Convert a CERT/PEM certificate to a PFX certificate

... OP's question was how to import it when the private key is not included in the certificate file but you got two files: a crt and a pem (pem containing the private key). This answer doesn't work in that case. – masi Jan 15 '18 at 21:14 ...
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How can I pretty-print JSON in a shell script?

...imple to use and it works great! It can handle very large JSON structures, including streams. You can find their tutorials here. Usage examples: $ jq --color-output file1.json file1.json | less -R $ command_with_json_output | jq . $ jq # stdin/"interactive" mode, just enter some JSON $ jq <&l...
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What is the difference between Non-Repeatable Read and Phantom Read?

... @anir yes inserts and deletes are included in dirty reads. Example: start a transaction, insert 2 of 100 invoice lines on connection a, now connection b reads those 2 lines before the trx is committed and before the other 98 lines are added, and so doesn't in...
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What are named pipes?

...al file in the filesystem and can be accessed with normal file IO commands including the shell. Windows ones don't, and need to be opened with a special system call (after which they behave mostly like a normal win32 handle). Even more confusing, Unix has something called a "Unix socket" or AF_UNIX...
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How to check iOS version?

...ting system version. For projects targeting iOS 8 and above, NSProcessInfo includes a method for performing version comparisons with less chance of error: - (BOOL)isOperatingSystemAtLeastVersion:(NSOperatingSystemVersion)version Projects targeting older systems can use systemVersion on UIDevice. ...
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What are the differences between git branch, fork, fetch, merge, rebase and clone?

...it, when you clone, you are actually copying the entire source repository, including all the history and branches. You now have a new repository on your machine and any commits you make go into that repository. Nobody will see any changes until you push those commits to another repository (or the or...
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Getting the error “Missing $ inserted” in LaTeX

... It's actually the underscores. Use \_ instead, or include the underscore package. share | improve this answer | follow | ...
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Why does HTML5 form-validation allow emails without a dot?

...id emails. So the standard HTML5 validation allows for all valid E-mails, including the uncommon ones. For some easy to read explanations (Instead of reading through the standards): http://en.wikipedia.org/wiki/Email_address#Examples ...