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How to read the RGB value of a given pixel in Python?
...[x,y] # Get the RGBA Value of the a pixel of an image
pix[x,y] = value # Set the RGBA Value of the image (tuple)
im.save('alive_parrot.png') # Save the modified pixels as .png
Alternatively, look at ImageDraw which gives a much richer API for creating images.
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Differences between INDEX, PRIMARY, UNIQUE, FULLTEXT in MySQL?
...r, the usual recommendation is that if the amount of records in the result set on which an index is applied exceeds 20% of the total amount of records of the parent table, then the index will be ineffective. In practice each architecture will differ but, the idea is still correct.
Secondary Indexes...
Creating a new empty branch for a new project
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After git checkout --orphan one can use git reset --hard to delete left over files.
– Ilya Kozhevnikov
Mar 31 '16 at 9:52
17
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How to catch curl errors in PHP
...n to detect if there was some error. For example:
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $your_url);
curl_setopt($ch, CURLOPT_FAILONERROR, true); // Required for HTTP error codes to be reported via our call to curl_error($ch)
//...
curl_exec($ch);
if (curl_errno($ch)) {
$error_msg = c...
How can I use jQuery in Greasemonkey?
...r GM_xmlhttpRequest (the Greasemonkey version of XHR) and use jQuery's ajaxSetup() to specify your wrapped version as the default. Once you do this, you can use $.get and $.post as usual.
You may also have problems with jQuery's $.getJSON because it loads JSONP using <script> tags. This leads...
How to strip HTML tags from string in JavaScript? [duplicate]
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SECURITY ISSUE ... This could be vulnerable as you're setting div.innerHTML ... i'm sure you don't wanted to get some unwanted script executed. ... manual cleanup would be cool.
– Khizer Ali
Aug 9 '16 at 11:44
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Where can I get Google developer key
...ey" is the DEVELOPER_KEY
if you check this code reference,
it states
Set DEVELOPER_KEY to the "API key" value from the "Access" tab of the Google APIs Console http://code.google.com/apis/console#access`
Wiki on step by step to get API Key & secret
Update:
Developer API Key! probably th...
Large, persistent DataFrame in pandas
...oes the DataFrame have to reside in memory? With SAS, I can work with datasets of any size as long as I have the hard-drive space. Is it the same with DataFrames? I get the impression they are constrained by RAM and not hard-drive space. Sorry for the noob question and thanks for you help. I'm e...
Reset local repository branch to be just like remote repository HEAD
How do I reset my local branch to be just like the branch on the remote repository?
21 Answers
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Install shows error in console: INSTALL FAILED CONFLICTING PROVIDER
...rary or the manifest file. Deleting the old applications from your device (Settings --> Application --> <your application> --> Uninstall) will solve the issue then.
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