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Best way to test for a variable's existence in PHP; isset() is clearly broken
...bitrary code used as a fallback for nonexistent variables, that can return whatever it wants regardless of whether any relevant data was ever stored.
– Brilliand
Apr 17 '17 at 19:35
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How does this milw0rm heap spraying exploit work?
...code execution.
To understand more deeply, you should actually figure out what is in the x86 code. unscape will be used to put the sequence of bytes represented of the string in the spray variable. It's valid x86 code that fills a large chunk of the heap and jumps to the start of shellcode. The rea...
How do I force make/GCC to show me the commands?
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To invoke a dry run:
make -n
This will show what make is attempting to do.
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Detect when browser receives file download
...r, and every second or so, look for a cookie named "fileDownloadToken" (or whatever you decide).
If the cookie exists, and its value matches the token, hide the "waiting" indicator.
The server algorithm:
Look for the GET/POST field in the request.
If it has a non-empty value, drop a cookie (e.g....
How to match, but not capture, part of a regex?
...receded by 123- and followed by 456.
|Lookaround | Name | What it Does |
-----------------------------------------------------------------------
|(?=foo) | Lookahead | Asserts that what immediately FOLLOWS the |
| | | current pos...
Android Debug Bridge (adb) device - no permissions [duplicate]
...-rw-r--+ 1 root plugdev 189, 177 Oct 10 10:12 /dev/bus/usb/002/050
Wait. What? Where did that "plugdev" group come from?
$ cd /lib/udev/rules.d/
$ grep -R "6860.*plugdev" .
./40-libgphoto2-2.rules:ATTRS{idVendor}=="0bb4", ATTRS{idProduct}=="6860", \
ENV{ID_GPHOTO2}="1", ENV{GPHOTO2_DRIVER}="pro...
How do I force my .NET application to run as administrator?
...ake sure the "Manifest:" under 'Resources" is set to your app.manifest (or whatever you named the .manifest file).
– Victor Chelaru
Apr 12 '16 at 5:12
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Why is exception handling bad?
...may be inconsistent with bar, but your code will eventually rectify that. What exceptions mean is that any one of your statements can interrupt you at any time. The onus is on you in each individual method to get it right and roll back when that happens, or order your operations so throws don't ef...
“Inner exception” (with traceback) in Python?
...Type
Here's another example that's more general purpose if you don't know what kind of exceptions your code might have to catch. The downside is that it loses the exception type and just raises a RuntimeError. You have to import the traceback module.
except Exception:
extype, ex, tb = sys.exc_...
What does cmd /C mean? [closed]
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what if a given command is kind of a server that starts it's own loop? should we use /C or /K?
– redpix_
Mar 27 '17 at 20:21
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