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What is the difference between sigaction and signal?
...uld be avoided when possible. sigaction is the preferred method.
Source: https://www.gnu.org/software/libc/manual/html_node/Basic-Signal-Handling.html#Basic-Signal-Handling
So, if both Linux and GCC say not to use signal(), but to use sigaction() instead, that begs the question: how the heck do w...
Detect URLs in text with JavaScript
...rapping inside the text, with JavaScript.
OK so lets just use this one: /(https?:\/\/[^\s]+)/g
Again, this is a bad regex. It will have many false positives. However it's good enough for this example.
function urlify(text) {
var urlRegex = /(https?:\/\/[^\s]+)/g;
return text.replace(url...
How to convert an address into a Google Maps Link (NOT MAP)
...
How about this?
https://maps.google.com/?q=1200 Pennsylvania Ave SE, Washington, District of Columbia, 20003
https://maps.google.com/?q=term
If you have lat-long then use below URL
https://maps.google.com/?ll=latitude,longitude
Example...
How do I set up DNS for an apex domain (no www) pointing to a Heroku app?
...as the canonical URL. How you decide to do that depends on if you're using HTTPS or not. And if you're not, you probably should be as Heroku now handles SSL certificates for you automatically and for free for all applications running on paid dynos.
If you're not using HTTPS, you can just set up a 3...
How to replace plain URLs with links?
...ern1, replacePattern2, replacePattern3;
//URLs starting with http://, https://, or ftp://
replacePattern1 = /(\b(https?|ftp):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/gim;
replacedText = inputText.replace(replacePattern1, '<a href="$1" target="_blank">$1</a&g...
Where do I find the current C or C++ standard documents?
...nic versions of the standard
C89 – Draft version in ANSI text format: (https://web.archive.org/web/20161223125339/http://flash-gordon.me.uk/ansi.c.txt)
C90 TC1; ISO/IEC 9899 TCOR1, single-page HTML document: (http://www.open-std.org/jtc1/sc22/wg14/www/docs/tc1.htm)
C90 TC2; ISO/IEC 9899 TCOR2, s...
Embed YouTube video - Refused to display in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'
...as the /watch endpoint does not.
<iframe width="420" height="315" src="https://www.youtube.com/embed/A6XUVjK9W4o" frameborder="0" allowfullscreen></iframe>
share
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How to customize an end time for a YouTube video?
...
I just found out that the following works:
https://www.youtube.com/embed/[video_id]?start=[start_at_second]&end=[end_at_second]
Note: the time must be an integer number of seconds (e.g. 119, not 1m59s).
...
Setting PayPal return URL and making it auto return?
...efault.
To turn on Auto Return:
Log in to your PayPal account at https://www.paypal.com or https://www.sandbox.paypal.com
The My Account Overview page appears.
Click the gear icon top right.
The Profile Summary page appears.
Click the My Selling Preferences link in the left colum...
server { # 我们都知道（我们都应该知道），443是 https 的默认端口 list...
... # 我们都知道（我们都应该知道），443是 https 的默认端口
listen 443 ssl;
server_name www.your-domain.com;
# 你要有证书，才能 https，免费申请一个吧，七牛...