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How does having a dynamic variable affect performance?
... object again, and if the object is the same type as it was last time, it fetches the delegate out of the cache and invokes it. If the object is of a different type then the cache misses, and the whole process starts over again; we do semantic analysis of the call and store the result in the cache.
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Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
... However, I would feel pretty confident using the hash in .bashrc aliases, etc., and I don't think it will change anytime soon. At the very least it would probably be a major release of git.
The two ways are:
The answer above: git hash-object -t tree --stdin < /dev/null
Simply initing an empty...
Can you explain the HttpURLConnection connection process?
... like getInputStream, getOutputStream, getResponseCode, getResponseMessage etc.
Here is the packet exchange captured when I try to write a small program to upload file to Dropbox.
Below is my toy program and annotation
/* Create a connection LOCAL object,
* the openConnection() functi...
Making custom right-click context menus for my web-app
...
Note: you might see some small bugs (dropdown far from the cursor, etc), please make sure that it works in the jsfiddle, as that's more similar to your webpage than StackSnippets might be.
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xkcd style graphs in MATLAB
...hat involves inheriting from the handle class, using events and listeners, etc. For now, here are my simpler implementations:
xkcd_axes.m:
function hAxes = xkcd_axes(xkcdOptions, varargin)
hAxes = axes(varargin{:}, 'NextPlot', 'add', 'Visible', 'off', ...
'XLimMode', 'manual', 'Y...
Is either GET or POST more secure than the other?
...ssignment vulnerability in various frameworks: ASP.NET MVC, Ruby on Rails, etc.). There is no single thing that will make the difference between "secure" (not exploitable) and "not secure".
Over HTTPS, POST data is encoded, but could URLs be sniffed by a 3rd party?
No, they can’t be sniffed. B...
load and execute order of scripts
... task that the networking task source places on the task queue once
the fetching algorithm has completed must set the element's "ready to
be parser-executed" flag. The parser will handle executing the script.
If the element has a src attribute, and the element has been flagged
as "parser-...
AngularJS: Understanding design pattern
...hQuery = queryParams.substring || searchQuery;
return searchResource.fetch(searchQuery, page, itemsPerPage).then( function (results) {
totalPages = results.totalPages;
currentPage = results.currentPage;
allLoaded = totalPages <= currentPage;
return results.list
}...
Using IQueryable with Linq
... against a remote database, with many ORM systems, you have the option of fetching data from a table in two ways, one which returns IEnumerable<T>, and one which returns an IQueryable<T>. Say, for example, you have a Products table, and you want to get all of the products whose cost is ...
How to generate a random number in C++?
...ing symmetric keys, asymmetric private keys, salt values, security tokens, etc.
However security-grade random numbers is a separate industry worth a separate article.
In most cases Pseudo-Random Number Generator is sufficient - e.g. for scientific simulations or games. In some cases consistently def...