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PHP: How to remove all non printable characters in a string?
... you just want the 7 bit printable ASCII chars, you can rip out everything from 0-31 and 127-255 with this:
$string = preg_replace('/[\x00-\x1F\x7F-\xFF]/', '', $string);
It matches anything in range 0-31, 127-255 and removes it.
8 bit extended ASCII?
You fell into a Hot Tub Time Machine, and ...
How can I get sin, cos, and tan to use degrees instead of radians?
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Multiply the input by Math.PI/180 to convert from degrees to radians before calling the system trig functions.
You could also define your own functions:
function sinDegrees(angleDegrees) {
return Math.sin(angleDegrees*Math.PI/180);
};
and so on.
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Difference between Django's annotate and aggregate methods?
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I would focus on the example queries rather than your quote from the documentation. Aggregate calculates values for the entire queryset. Annotate calculates summary values for each item in the queryset.
Aggregation
>>> Book.objects.aggregate(average_price=Avg('price'))
{'av...
How to set a default value for a datetime column to record creation time in a migration?
...ne who downvoted, but I'm having difficulty seeing how this answer differs from will's answer that precedes yours by one year. The question is about setting a default, and your answer has the same lambda clause.
– nurettin
Mar 2 '18 at 16:45
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How do I undo a checkout in git?
I just checked out an earlier commit from my local git repo. I haven't made any changes to it, I was just looking at it. Now I want to go back to my latest commit - how do I do that?
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How to detect shake event with android?
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From the code point of view, you need to implement the SensorListener:
public class ShakeActivity extends Activity implements SensorListener
You will need to acquire a SensorManager:
sensorMgr = (SensorManager) getSystemS...
How to create a JavaScript callback for knowing when an image is loaded?
...the load()-event in jQuery but it won't always fire if the image is loaded from the browser cache. This plugin https://github.com/peol/jquery.imgloaded/raw/master/ahpi.imgload.js can be used to remedy that problem.
share
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PHP Get all subdirectories of a given directory
... the accepted answer does not answer the question: getting sub-directories from the parent directory (aka siblings of current working directory). To do so it'd need to change working directory to the parent directory.
– ryanm
Nov 7 '16 at 20:12
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jQuery validate: How to add a rule for regular expression validation?
...nswered Apr 2 '09 at 11:38
PeterFromColognePeterFromCologne
9,42788 gold badges3131 silver badges4242 bronze badges
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Auto-size dynamic text to fill fixed size container
... I actually just cleaned it up and packaged it as a plugin available from jquery.com at plugins.jquery.com/project/TextFill
– GeekyMonkey
Mar 27 '09 at 16:39
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