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Unable to install gem - Failed to build gem native extension - cannot load such file — mkmf (LoadErr
...uby1.9.1-dev
Should fix your problem.
Still not working? Try the following after installing ruby-dev:
sudo apt-get install make
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Error on pod install
... 700MB of data as on 19 Dec 2019. Do this only when you have time and good internet speed.
– iphondroid
Dec 19 '19 at 6:57
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How to develop and test an app that sends emails (without filling someone's mailbox with test data)?
...e problem a few weeks ago and wrote this: http://smtp4dev.codeplex.com
Windows 7/Vista/XP/2003/2010 compatible dummy SMTP server. Sits in the system tray and does not deliver the received messages. The received messages can be quickly viewed, saved and the source/structure inspected. Useful for ...
Why does JavaScript only work after opening developer tools in IE once?
... answer and others,there is at least another reason why sometimes pages in Internet Explorer work only with the developer tools activated.
When Developer Tools is enabled, IE doesn't really uses its HTTP cache (at least by default in IE 11) like it does in normal mode.
It means if your site or pag...
avoid page break inside row of table
... Doesn't work. Nothing works. I tried every "solution" on the internet and there is no solution. We just have to accept crap software that can't even render a table.
– Niklas R.
Oct 20 '17 at 13:15
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What is the 
 character?
...mat.
Please consider that:
Some data (like URLs) can be sent over the Internet using the ASCII character-set.
Since data often contain characters outside the ASCII set, so it has
to be converted into a valid ASCII format.
To find it yourself, you can visit https://en.wikipedia.org/wiki/AS...
Are single quotes allowed in HTML?
...
Don't believe everything you see on Internet...
Funnily, I just answered something similar to somebody declaring single quotes are not valid in XHTML...
Mmm, I look above while typing, and see that Adam N propagates the same belief. If he can back up his affir...
Copy folder structure (without files) from one location to another
...tion saving ownership, timestamp and permissions. So it produced a mess in Win7/cygwin - NULL_SID user, wrong permissions order, cannot edit permissions, etc and cannot access produced filestructure.
– WebComer
Feb 23 '18 at 1:37
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Array Size (Length) in C#
...questions that popup. I am not sure if the answer exists elsewhere on the internet if it doesn't belong here too.
– user420667
Nov 18 '11 at 21:26
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How does OpenID authentication work?
... user-centric digital identity. OpenID takes advantage of already existing internet technology (URI, HTTP, SSL, Diffie-Hellman) and realizes that people are already creating identities for themselves whether it be at their blog, photostream, profile page, etc. With OpenID you can easily transform on...