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What is a segmentation fault?
...nd introducing hard-to-debug memory bugs. Whenever you get a segfault you know you are doing something wrong with memory – accessing variable that has already been freed, writing to a read-only portion of the memory, etc. Segmentation fault is essentially the same in most languages that let you me...
When to use MongoDB or other document oriented database systems? [closed]
...os and vector-graphics don't share any common meta-information, etc. so I know, that MongoDB is perfect to store this unstructured data and keep it searchable.
...
Fade Effect on Link Hover?
...
Nowadays people are just using CSS3 transitions because it's a lot easier than messing with JS, browser support is reasonably good and it's merely cosmetic so it doesn't matter if it doesn't work.
Something like this gets th...
configure Git to accept a particular self-signed server certificate for a particular https remote
...t system wide, using --system instead of --global.
And test it: You shall now be able communicating with your server without resorting to:
$ git config --global http.sslVerify false #NO NEED TO USE THIS
If you already set your git to ignorance of ssl certificates, unset it:
$ git config --globa...
Tool to convert Python code to be PEP8 compliant
I know there are tools which validate whether your Python code is compliant with PEP8, for example there is both an online service and a python module .
...
How to avoid long nesting of asynchronous functions in Node.js
...lback(null, 'three');
},
function(arg1, callback){
// arg1 now equals 'three'
callback(null, 'done');
}
], function (err, result) {
// result now equals 'done'
});
As for the req,res variables, they will be shared within the same scope as function(req,res){} whi...
Python __call__ special method practical example
I know that __call__ method in a class is triggered when the instance of a class is called. However, I have no idea when I can use this special method, because one can simply create a new method and perform the same operation done in __call__ method and instead of calling the instance, you can c...
What unique features does Firebug have that are not built-in to Firefox?
...between Firebug and the Firefox DevTools.
Firebug integration
Firebug is now built on top of the native developer tools.
Since Firefox 48 there's also a Firebug theme that looks like the Firebug extension, letting you feel at home if you're used to Firebug.
Once multi-process Firefox is enabled, p...
Embedding ads on Android app?
...ke to embed ad on it. I am not sure where I should start? Is there a well known mobile ad company out there that is specialized in mobile advertising?
...
How to find where gem files are installed
...
After installing the gems, if you want to know where a particular gem is. Try typing:
gem list
You will be able to see the list of gems you have installed. Now use bundle show and name the gem you want to know the path for, like this:
bundle show <gemName&g...