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“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
... ? 'true' : 'false');
echo "\n";
});
Test the above snippet in the 3v4l.org online PHP editor
Although PHP does not require a variable declaration, it does recommend it in order to avoid some security vulnerabilities or bugs where one would forget to give a value to a variable that will be us...
sed in-place flag that works both on Mac (BSD) and Linux
... and the dot.
Proof:
# GNU sed
% sed --version | head -1
GNU sed version 4.2.1
% echo 'foo' > file
% sed -i.bak 's/foo/bar/' ./file
% ls
file file.bak
% cat ./file
bar
# BSD sed
% sed --version 2>&1 | head -1
sed: illegal option -- -
% echo 'foo' > file
% sed -i.bak 's/foo/bar/' ./f...
Include jQuery in the JavaScript Console
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1405
Run this in your browser's JavaScript console, then jQuery should be available...
var jq = do...
Difference between MEAN.js and MEAN.io
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374
They're essentially the same... They both use swig for templating, they both use karma and mocha...
Converting String to Int with Swift
...answerLabel.text = "Input values are not numeric"
}
Update for Swift 4
...
let a:Int? = Int(firstText.text) // firstText is UITextField
let b:Int? = Int(secondText.text) // secondText is UITextField
...
share
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Using a 'using alias = class' with generic types? [duplicate]
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104
No there is not. A type alias in C# must be a closed (aka fully resolved) type so open generics...
Should arrays be used in C++?
...dasblinkenlightdasblinkenlight
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3
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How to grep (search) committed code in the Git history
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edited May 3 at 4:17
Nickolay
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answer...
System.Security.SecurityException when writing to Event Log
...
Michael FreidgeimMichael Freidgeim
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How to extract text from a PDF? [closed]
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I was given a 400 page pdf file with a table of data that I had to import - luckily no images. Ghostscript worked for me:
gswin64c -sDEVICE=txtwrite -o output.txt input.pdf
The output file was split into pages with headers, etc., but it...