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How to fix getImageData() error The canvas has been tainted by cross-origin data?
...the remote server sets the following header appropriately:
Access-Control-Allow-Origin "*"
The Dropbox file chooser when using the "direct link" option is a great example of this. I use it on oddprints.com to hoover up images from the remote dropbox image url, into my canvas, and then submit the ...
What's the maximum value for an int in PHP?
Ignoring the special libraries that allow you to work with very big numbers, what's the largest int value you can store in PHP?
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EF Code First: How do I see 'EntityValidationErrors' property from the nuget package console?
...pper function in the Configuration class in the Seed method, and replaced calls to SaveChanges with calls to my function instead. This function would simply enumerate the errors within the EntityValidationErrors collection, and rethrow an exception where the Exception message lists the individual p...
How do I concatenate two strings in C?
...-terminator.
char* concat(const char *s1, const char *s2)
{
const size_t len1 = strlen(s1);
const size_t len2 = strlen(s2);
char *result = malloc(len1 + len2 + 1); // +1 for the null-terminator
// in real code you would check for errors in malloc here
memcpy(result, s1, len1);
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Is there a VB.NET equivalent for C#'s '??' operator?
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If Operator (Visual Basic)
Uses short-circuit evaluation to conditionally return one of two
values. The If operator can be called with three arguments or with two
arguments.
If( [argument1,] argument2, argument3 )
If Operator Called with Two Arguments
The first argument to If...
Fastest way(s) to move the cursor on a terminal command line?
...rl+Alt+] for backward search.
I recommend the second option. Ctrl+r is really handy and fast, no mucking about with editors, and you see the results before the command is run (unlike the history expansions).
share
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Get free disk space
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I know this answer is ancient, but you usually need to use AvailableFreeSpace as @knocte says. AvailableFreeSpace lists how much is actually available for the user (due to quotos). TotalFreeSpace lists what is available on the disk, irregardless of what the user can ...
How to programmatically take a screenshot on Android?
... save the file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
And this is the code (running in an Activity):
private void takeScreenshot() {
Date now = new Date();
android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", now);
try {
//...
What text editor is available in Heroku bash shell? [closed]
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I recently turned the original gist into a heroku cli plugin.
Just install:
heroku plugins:install https://github.com/naaman/heroku-vim
And use:
heroku vim
The heroku vim command will drop you into a bash shell with vim installed on your $PATH. All you have to do is retrain your fingers to t...
Dynamically access object property using variable
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You inspired me to create an enhanced version that allows bracket notation & property names with spaces as well as validating the inputs: it.knightnet.org.uk/kb/node-js/get-properties
– Julian Knight
Jan 3 '19 at 14:04
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