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Pointer vs. Reference
...ent point regarding a pointer being NULL. If you have a pointer parameter then you must either check explicitly that it is not NULL, or search all usages of the function to be sure that it is never NULL. This effort is not required for references.
– Richard Corden
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A cron job for rails: best practices?
... execute from the command line, this is just "rake cron". This command can then be put on the operating system cron/task scheduler as desired.
Update this is quite an old question and answer! Some new info:
the heroku cron service I referenced has since been replaced by Heroku Scheduler
for frequ...
What is Express.js?
...oices for your templating language (like EJS, Jade, and Dust.js).
You can then use a database like MongoDB with Mongoose (for modeling) to provide a backend for your Node.js application. Express.js basically helps you manage everything, from routes, to handling requests and views.
Redis is a key/v...
Cannot install packages using node package manager in Ubuntu
...situation thoroughly rather than just giving a command to execute blindly. Then I can copy that info into the comments in my environment setup script so I know what's going on a year from now when it doesn't work.
– Mnebuerquo
Oct 8 '14 at 18:28
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Why can't Python find shared objects that are in directories in sys.path?
...rivilege? I cannot run ldconfig? Is there any way to clear the above error then?
– Prasanna
Jul 4 '13 at 6:12
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Splitting a string into chunks of a certain size
...at StringLength % 4 will always be 0. If Linq is not as easy to understand then there are other answers that use loops and yields. Anyone is free to choose the solution she likes best. You can post your code as an answer and people will happily vote for it.
– Konstantin Spirin
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How to create a printable Twitter-Bootstrap page
...text/css" href="bootstrap.min.css"> # Note there's no media attribute
Then, you can write your styles for printers in the separate stylesheets or in the shared one using media queries:
@media print {
/* Your styles here */
}
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How to install a gem or update RubyGems if it fails with a permissions error
...our bashrc if which ruby >/dev/null && which gem >/dev/null; then PATH="$(ruby -rubygems -e 'puts Gem.user_dir')/bin:$PATH" fi <br>Source:guides.rubygems.org/faqs/#user-install
– Inder Kumar Rathore
Aug 22 '17 at 10:42
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Easiest way to convert int to string in C++
...clang to compile so it complains about it. If I just omit the dynamic_cast then it compiles fine; what purpose does the dynamic_cast serve in this case? We are already creating an ostringstream, so why cast it?
– Mathew
Oct 21 '14 at 2:38
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Cannot set some HTTP headers when using System.Net.WebRequest
...g you that the header you are trying to add already exist and you should then modify its value using the appropriate property (the indexer, for instance), instead of trying to add it again.
1.2 Anytime you're changing the headers of an HttpWebRequest, you need to use the appropriate properties o...