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How to save a PNG image server-side, from a base64 data string
...rt canvas drawings to PNG images.
What I need now is to turn those base64 strings that this tool generates, into actual PNG files on the server, using PHP.
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MongoDB Many-to-Many Association
...modeled as the following document templates:
User: { _id: UniqueId, name: string, roles: string[] }
Indexes: unique: [ name ]
Role: { _id: UniqueId, name: string, users: string[] }
Indexes: unique: [ name ]
To support the high frequency uses, such as Role-related features from the User en...
Exiting from python Command Line
...
In my python interpreter exit is actually a string and not a function -- 'Use Ctrl-D (i.e. EOF) to exit.'. You can check on your interpreter by entering type(exit)
In active python what is happening is that exit is a function. If you do not call the function it will p...
Remove last character from string. Swift language
How can I remove last character from String variable using Swift? Can't find it in documentation.
22 Answers
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Access lapply index names inside FUN
...vector instead of the vector itself.
But note that you can always pass in extra arguments to the function, so the following works:
x <- list(a=11,b=12,c=13) # Changed to list to address concerns in commments
lapply(seq_along(x), function(y, n, i) { paste(n[[i]], y[[i]]) }, y=x, n=names(x))
He...
Python 2.7 getting user input and manipulating as string without quotations
I want to get a string from a user, and then to manipulate it.
8 Answers
8
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Adding a parameter to the URL with JavaScript
...arch based solution, but that depends completely on the length of the querystring and the index of any match
the slow regex method I benchmarked against for completions sake (approx +150% slower)
function insertParam2(key,value)
{
key = encodeURIComponent(key); value = encodeURIComponent(val...
Should we @Override an interface's method implementation?
...prohibited the annotation, with 1.6 it doesn't. The annotation provides an extra compile-time check, so if you're using 1.6 I'd go for it.
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Get the full URL in PHP
.../$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
(Note that the double quoted string syntax is perfectly correct)
If you want to support both HTTP and HTTPS, you can use
$actual_link = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVE...
Get the current script file name
...o($filename, PATHINFO_FILENAME);
}
var_dump(chopExtension('bob.php')); // string(3) "bob"
var_dump(chopExtension('bob.i.have.dots.zip')); // string(15) "bob.i.have.dots"
Using standard string library functions is much quicker, as you'd expect.
function chopExtension($filename) {
return subst...