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Creating the Singleton design pattern in PHP5
...] = new static;
}
return self::$instances[$cls];
}
}
Test code:
class Foo extends Singleton {}
class Bar extends Singleton {}
echo get_class(Foo::getInstance()) . "\n";
echo get_class(Bar::getInstance()) . "\n";
...
Efficient way to remove keys with empty strings from a dict
...on (and more readable I think)
{k: v for k, v in metadata.items() if v}
Tested with Python 2.7.3.
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How is mime type of an uploaded file determined by browser?
...r upload, it looks at the first buffer of data it receives and then runs a test on it. These tests try to determine if the file is a known mime type or not, and if known mime type it will simply further test it for which known mime type and take action accordingly. I think IE tries to do this first ...
Allow user to set up an SSH tunnel, but nothing else
...rom there you can escape to an unrestricted shell with !/bin/bash. See pen-testing.sans.org/blog/2012/06/06/… for other examples. So allowing individual commands should be done very, very carefully, if at all.
– Fritz
Sep 1 '15 at 17:33
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How to inspect the return value of a function in GDB?
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(gdb) r
Starting program: /usr/home/hark/a.out
Breakpoint 1, fun () at test.c:2
2 return 42;
(gdb) finish
Run till exit from #0 fun () at test.c:2
main () at test.c:7
7 return 0;
Value returned is $1 = 42
(gdb)
The finish command can be abbreviated as fin. Do NOT ...
Given final block not properly padded
...ause it doesn't work @fpacifici and I updated my post I included the JUnit test that tests the encryption and decryption
– Altrim
Nov 8 '11 at 15:36
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Detect IE version (prior to v9) in JavaScript
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@RoyiNamir This tests for IE8. Why on earth should it return true on IE11?
– Andreas
Jan 19 '15 at 16:24
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XML Schema (XSD) validation tool? [closed]
...ts. This is largely due to the complexity of the XSD spec. You may want to test your schema with several tools.
UPDATE: I've expanded on this in a blog post.
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Jackson databind enum case insensitive
... SerializerProvider provider) throws IOException {
jgen.writeString(value.name().toLowerCase());
}
});
mapper.registerModule(module);
String json = mapper.writeValueAsString(types);
System.out.println(json);
List<DataType> typ...
Adding a background image to a element
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Use like ..
<div style="background-image: url(../images/test-background.gif); height: 200px; width: 400px; border: 1px solid black;">Example of a DIV element with a background image:</div>
<div style="background-image: url(../images/test-background.gif); height: 200px;...