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map vs. hash_map in C++

I have a question with hash_map and map in C++. I understand that map is in STL, but hash_map is not a standard. What's the difference between the two? ...
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How do you sign a Certificate Signing Request with your Certification Authority?

...he ca module openssl ca ... ... You are missing the prelude to those commands. This is a two-step process. First you set up your CA, and then you sign an end entity certificate (a.k.a server or user). Both of the two commands elide the two steps into one. And both assume you have a an OpenSSL con...
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What's the difference between RANK() and DENSE_RANK() functions in oracle?

What's the difference between RANK() and DENSE_RANK() functions? How to find out nth salary in the following emptbl table? ...
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How to recursively find the latest modified file in a directory?

...n BSD, the options for formatting is different (-f "%m %N" it would seem) And I missed the part of plural; if you want more then the latest file, just bump up the tail argument. share | improve thi...
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How do I push to GitHub under a different username?

A friend and myself are sharing my computer. I've made pushes to GitHub using the git bash shell on Windows 7. Now we're in a different project on that computer and I need her to push to her account. But it keeps trying to use my username and saying I don't have access to her repository: ...
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The difference between try/catch/throw and try/catch(e)/throw e

...milar in that both will catch every exception thrown inside the try block (and, unless you are simply using this to log the exceptions, should be avoided). Now look at these: try { ... } catch () { /* ... */ throw; } try { ... } catch (Exception e) { /* ... */ throw; } try { ... }...
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How do I check if a variable exists in a list in BASH

...amp; echo 'yes' || echo 'no'. it's correct assuming space is the separator and $x doesn't contain space – Tianren Liu Apr 5 '16 at 21:47 ...
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What exactly is Hot Module Replacement in Webpack?

...tal feature. HMR is a way of exchanging modules in a running application (and adding/removing modules). You basically can update changed modules without a full page reload. Documentation Prerequirements: Using Plugins: https://webpack.js.org/concepts/plugins/ Code Splitting: https://webpack.js....
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If table exists drop table then create it, if it does not exist just create it

...ks for a list of tables or views! DROP TABLE IF EXISTS 'table1', 'table2'; and DROP VIEW IF EXISTS 'view1', 'view2'; PS- What witchcraft did you use to have `s in inline code!? – Campbeln Mar 3 '16 at 23:32 ...
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How does Google calculate my location on a desktop?

... Maps, when clicked (without being logged into my Google Account) using standard Wi Fi to my own personal router and a normal internet connection to my ISP, it somehow manages to pinpoint my exact location with a 100% accuracy (at this moment in time). ...