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How is Perl's @INC constructed? (aka What are all the ways of affecting where Perl modules are searc
...ke this:
$ env -i perl -V
...
@INC:
/usr/lib/perl5/site_perl/5.18.0/x86_64-linux-thread-multi-ld
/usr/lib/perl5/site_perl/5.18.0
/usr/lib/perl5/5.18.0/x86_64-linux-thread-multi-ld
/usr/lib/perl5/5.18.0
.
Note . at the end; this is the current directory (which is not necessarily the same a...
Environment variables for java installation
...
Java SE Development Kit 8u112 on a 64-bit Windows 7 or Windows 8
Set the following user environment variables (== environment variables of type user variables)
JAVA_HOME : C:\Program Files\Java\jdk1.8.0_112
JDK_HOME : %JAVA_HOME%
JRE_HOME : %JAVA_HOME%\jr...
Why is it bad style to `rescue Exception => e` in Ruby?
... it:
loop do
begin
sleep 1
eval "djsakru3924r9eiuorwju3498 += 5u84fior8u8t4ruyf8ihiure"
rescue Exception
puts "I refuse to fail or be stopped!"
end
end
Rescuing from Exception isn't even the default. Doing
begin
# iceberg!
rescue
# lifeboats
end
does not rescue from Excep...
When do I use the PHP constant “PHP_EOL”?
...uses "\n". Someone should file a bug report...
– imgx64
Jan 28 '12 at 7:32
28
@imgx64 Yeah maybe,...
Do you use NULL or 0 (zero) for pointers in C++?
...
cerr << sizeof(void*) << endl;
============
On a 64-bit gcc RHEL platform you get:
4
8
8
================
The moral of the story. You should use NULL when you're dealing with pointers.
1) It declares your intent (don't make me search through all your cod...
What is a Portable Class Library?
...
84
UPDATE Oct 9 2017: Article comparing/constrasting .NET Core/Std/PCL
UPDATE Nov 23 2016: Article...
byte + byte = int… why?
... With ints it does overflow. Try adding int.MaxValue + 1 you get -2147483648 instead of 2147483648.
– David Basarab
Jun 2 '09 at 20:13
8
...
JRE 1.7 - java version - returns: java/lang/NoClassDefFoundError: java/lang/Object
...ultiplyByZer0
3,73333 gold badges2727 silver badges4646 bronze badges
answered Jan 23 '13 at 12:51
Rigg802Rigg802
2,61611 gold bad...
How to create a unique index on a NULL column?
...
84
create unique index UIX on MyTable (Column1) where Column1 is not null
– Jørn Schou-Rode
Dec 2 '10 ...
How do you detect Credit card type based on number?
...at you make the field wide enough to display 32 characters and allow up to 64; that gives plenty of headroom for expansion.
Here's an image that gives a little more insight:
UPDATE (2014): The checksum method no longer appears to be a valid way of verifying a card's authenticity as noted in the co...