Tutorial by Topics: ls

The term literal is commonly used to describe a sequence of characters in a C code that designates a constant value such as a number (e.g. 0) or a string (e.g. "C"). Strictly speaking, the standard uses the term constant for integer constants, floating constants, enumeration constants ...
A note on structs Instead of sharing protocol implementation with maps, structs require their own protocol implementation.
jekyll build [flag] [value] # Build the site with the setting specified by <flag> and <value>                             # cf. list of available settings for Jekyll If you edit _config.yml and you are using --watch, you need to restart the command to apply the changes.
The select keyword provides an easy method to work with channels and perform more advanced tasks. It is frequently used for a number of purposes: - Handling timeouts. - When there are multiple channels to read from, the select will randomly read from one channel which has data. - Providing an ea...
Python is a language meant to be clear and readable without any ambiguities and unexpected behaviors. Unfortunately, these goals are not achievable in all cases, and that is why Python does have a few corner cases where it might do something different than what you were expecting. This section will...
Official docs explains playbook conditionals. http://docs.ansible.com/ansible/playbooks_conditionals.html Ansible (github) https://github.com/marxwang/ansible-learn-resources
A function in the *apply family is an abstraction of a for loop. Compared with the for loops *apply functions have the following advantages: Require less code to write. Doesn't have an iteration counter. Doesn't use temporary variables to store intermediate results. However for loops are m...
// canOpenURL method verifies if there is any app which can handle indicated URL scheme. // Swift UIApplication.sharedApplication().canOpenURL(_ aUrl: NSURL) // Objective-C [[UIApplication sharedApplication] canOpenURL:(NSURL *)aUrl]; // openURL method tries to open a resource...
The special symbol .SD is available in j of DT[i,j,by], capturing the Subset of Data for each by group surviving the filter, i. .SDcols is a helper. Type ?`special-symbols` for the official docs. A reminder: DT[where, select|update|do, by] syntax is used to work with columns of a data.table. T...
The best complete wiki is available here in github.

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