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How to set JAVA_HOME in Linux for all users
...gin again
– kuhajeyan
Aug 14 '19 at 10:11
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Access an arbitrary element in a dictionary in Python
... edited Sep 10 '19 at 8:33
Win Myo Htet
5,16733 gold badges3232 silver badges5353 bronze badges
answered Jun 13 '13 at 10:54
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Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?
... 1 on Linux/glibc.
– Jander
Oct 21 '10 at 5:34
13
A word of caution: attaching to a process in gd...
Equivalent of varchar(max) in MySQL?
...that are nullable. If your column is null/not null this gets stored as one bit in a byte/bytes called the null mask, 1 bit per column that is nullable.
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Print a string as hex bytes?
...no sense!
– sherrellbc
Jul 20 at 14:10
1
@sherrellbc In python2 strings are sequences of bytes; o...
Why is “a” != “a” in C?
...316A) // Two memory locations
{
printf("Yes, equal");
}
Use the following code to compare two string values:
#include <string.h>
...
if(strcmp("a", "a") == 0)
{
// Equal
}
Additionally, "a" == "a" may indeed return true, depending on your compiler, which may combine equal string...
Python: changing value in a tuple
...le in-memory. Relying on various implementation details of CPython on a 64-bit system, one way to do this is as follows:
def modify_tuple(t, idx, new_value):
# `id` happens to give the memory address in CPython; you may
# want to use `ctypes.addressof` instead.
element_ptr = (ctypes.c_l...
How can I detect if the user is on localhost in PHP?
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Newer OS users (Win 7, 8) may also find it necessary to include an IPV6-format remote address in their whitelist array:
$whitelist = array('127.0.0.1', "::1");
if(!in_array($_SERVER['REMOTE_ADDR'], $whitelist)){
// not valid
}
...
How do I disable the 'Debug / Close Application' dialog on Windows Vista?
...
I had to disable this for release automation work on Windows 64-bits for Firefox and I did the following:
gpedit.msc
Computer configuration -> Administrative Templates
Windows Components -> Windows Error Reporting
Set "Prevent display of the user interface for critical errors" to ...
How to search a Git repository by commit message?
...
Though a bit late, there is :/ which is the dedicated notation to specify a commit (or revision) based on the commit message, just prefix the search string with :/, e.g.:
git show :/keyword(s)
Here <keywords> can be a single wo...