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What is the reason behind “non-static method cannot be referenced from a static context”? [duplicate
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You can't call something that doesn't exist. Since you haven't created an object, the non-static method doesn't exist yet. A static method (by definition) always exists.
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How to output a multiline string in Bash?
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Here documents are often used for this purpose.
cat << EOF
usage: up [--level <n>| -n <levels>][--help][--version]
Report bugs to:
up home page:
EOF
They are supported in all Bourne-derived shells including ...
When to use wrapper class and primitive type
...ers into a method/constructor to indicate state or function. This can't be done with primitives.
Many programmers initialize numbers to 0 (default) or -1 to signify this, but depending on the scenario, this may be incorrect or misleading.
This will also set the scene for a NullPointerException whe...
Disable sorting for a particular column in jQuery DataTables
...e jQuery DataTables plugin to sort the table fields. My question is: how do I disable sorting for a particular column? I have tried with the following code, but it did not work:
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HTTP Error 503, the service is unavailable
I'm really new to setting up web servers in general. I've got IIS 8 on Windows 8, and I'm trying to set up a little site locally, while doing some development. In IIS I choose Add Site, give a name, points to a location where I have a index.html file (I've tried different locations, latest in a c:\...
Uppercase Booleans vs. Lowercase in PHP
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Also with today's IDE's I do not see the reason to have pure upper-case boolean as the Syntax Highlighter for most IDE's separate them with great distinction.
– RobertPitt
Sep 28 '10 at 9:51
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How to give border to any element using css without adding border-width to the whole width of elemen
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Noted: outline doesn't define sides, so this works only if all sides are styled.
– Screenack
Mar 25 '13 at 1:02
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How to save a PNG image server-side, from a base64 data string
...age data from that string, decode it and then you can save it to disk, you don't need GD since it already is a png.
$data = 'data:image/png;base64,AAAFBfj42Pj4';
list($type, $data) = explode(';', $data);
list(, $data) = explode(',', $data);
$data = base64_decode($data);
file_put_contents('/tm...
Retrieving the output of subprocess.call() [duplicate]
...ocess.Popen() instead. Then you can pass subprocess.PIPE for the stderr, stdout, and/or stdin parameters and read from the pipes by using the communicate() method:
from subprocess import Popen, PIPE
p = Popen(['program', 'arg1'], stdin=PIPE, stdout=PIPE, stderr=PIPE)
output, err = p.communicate(b"...
Empty Git submodule folder when repo cloned
...f you use git submodule update --init you will have to go to each repo and do git checkout master otherwise you'll get error You are not currently on a branch. on git pull when you try to update it to a newer version.
– Noitidart
Nov 26 '16 at 10:04
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