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Better way to sum a property value in an array
... downvote on the 6th of October 2015? If there's a problem with the answer then please add a comment and I'll correct it. Nobody learns from anonymous downvotes.
– Gruff Bunny
Oct 6 '15 at 14:02
...
Get next / previous element using JavaScript?
...ly with selectionDiv iterate through the collection to find its index, and then obviously -1 = previous +1 = next within bounds
for(var i = 0; i < divs.length;i++)
{
if(divs[i] == selectionDiv)
{
var previous = divs[i - 1];
var next = divs[i + 1];
}
}
Please be aware though ...
Among $_REQUEST, $_GET and $_POST which one is the fastest?
... the other superglobals because of 'variables_order'. I process $_COOKIE, then $_GET, then $_POST. That way POST vars have the highest priority and cookie vars get the lowest, which allows me to implicitly fix a number of bugs (e.g. Adobe Flash and magic quotes).
– CubicleSof...
How to initialize std::vector from C-style array?
...e past the end with vector in a similar case). If you do get an assertion, then something is off elsewhere.
– Pavel Minaev
May 20 '15 at 4:50
1
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Auto reloading python Flask app upon code changes
...
If you are talking about test/dev environments, then just use the debug option. It will auto-reload the flask app when a code change happens.
app.run(debug=True)
Or, from the shell:
$ export FLASK_DEBUG=1
$ flask run
http://flask.pocoo.org/docs/quickstart/#debug-mode...
How to print out a variable in makefile
...(for instance when you tell it to build all), it expands the variable, and then passes each resulting line separately to the shell.
So, in painful detail:
It expands $(info $$var is [${var}])echo Hello world
To do this it first expands $(info $$var is [${var}])
$$ becomes literal $
${var} becom...
Why do I get “unresolved external symbol” errors when using templates? [duplicate]
...@JohannesSchaub-litb if every thing needs to be in header file(defination) then what is the use of .cpp file?
– Alex
Sep 21 '16 at 10:11
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s...
Is it possible to “await yield return DoSomethingAsync()”
...one-liner. What happens is that each individual url begins downloading and then WhenAll is used combine those operations into a single Task which can be awaited.
Task<IEnumerable<string>> DownLoadAllUrls(string[] urls)
{
return Task.WhenAll(from url in urls select DownloadHtmlAsync(...
When to use the brace-enclosed initializer?
... to be the exact value of the object, use copy (=) initialization (because then in case of error, you'll never accidentally invoke an explicit constructor, which generally interprets the provided value differently). In places where copy initialization is not available, see if brace initialization ha...
How to draw polygons on an HTML5 canvas?
...n one line, which reduces readability. If you don't care about readability then you might as well remove the curly brackets.
– AnnanFay
Feb 8 '18 at 14:55
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