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How to get a variable value if variable name is stored as string?
...evel of variable indirection. Bash uses the value of the
variable formed from the rest of parameter as the name of the
variable; this variable is then expanded and that value is used in the
rest of the substitution, rather than the value of parameter itself.
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Do I need a content-type header for HTTP GET requests?
...ontent-Type" is part of the representation (i.e. payload) metadata. Quoted from
RFC 7231 section 3.1:
3.1. Representation Metadata
Representation header fields provide metadata about the
representation. When a message includes a payload body, the
representation header fields describe how to inter...
Python's equivalent of && (logical-and) in an if-statement
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@Matt the table goes from lowest precedence to highest. It's easier to remember the precedence if you've studied boolean algebra; "or" is addition and "and" is multiplication.
– Michael Stroud
Dec 5 '17 at 1...
Renaming files in a folder to sequential numbers
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Putting together some great ideas from comments on this answer and others: ls -1prt | grep -v "/$" | cat -n | while read n f; do mv -n "${f}" "$(printf "%04d" $n).${f#*.}"; done Results: (1) sorted in order of modification, later files with later indexes;...
AngularJS - How can I do a redirect with a full page load?
I want to do a redirect that does a full page reload so that the cookies from my web server are refreshed when the page loads. window.location = "/#/Next" and window.location.href = "/#/Next" don't work, they do an Angular route which does not hit the server.
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Assembly code vs Machine code vs Object code?
...sociation with high-level programming language that are abstracted further from the CPU instructions.
Building a complete program involves writing source code for the program in either assembly or a higher level language like C++. The source code is assembled (for assembly code) or compiled (for hig...
Use URI builder in Android or create URL with variables
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Excellent answer from above turned into a simple utility method.
private Uri buildURI(String url, Map<String, String> params) {
// build url with parameters.
Uri.Builder builder = Uri.parse(url).buildUpon();
for (Map.Entry...
How to change value of object which is inside an array using JavaScript or jQuery?
The code below comes from jQuery UI Autocomplete:
23 Answers
23
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Make a link open a new window (not tab) [duplicate]
...re, that opening windows via javascript (if not done in the onclick event from an anchor element) are subject to getting blocked by popup blockers!
[1] This attribute dates back to the times when browsers did not have tabs and using framesets was state of the art. In the meantime, the functionalit...
What is the iBeacon Bluetooth Profile
...ns, however, a few hardware developers have reverse Engineered the iBeacon from the AirLocate Sample code and started selling iBeacon dev kits.
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