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How can I start PostgreSQL server on Mac OS X?
...ver.log?
Make sure tcp localhost connections are enabled in pg_hba.conf:
# IPv4 local connections:
host all all 127.0.0.1/32 trust
Check the listen_addresses and port in postgresql.conf:
egrep 'listen|port' /usr/local/var/postgres/postgresql.conf
#listen_addresses = 'localhost' #...
Get first n characters of a string
...ordwrap function:
function truncate($string,$length=100,$append="…") {
$string = trim($string);
if(strlen($string) > $length) {
$string = wordwrap($string, $length);
$string = explode("\n", $string, 2);
$string = $string[0] . $append;
}
return $string;
}
...
OpenSSL and error in reading openssl.conf file
...yName_max = 2
commonName = Common Name (hostname, IP, or your name)
commonName_max = 64
# Default values for the above, for consistency and less typing.
# Variable name Value
#------------------------ ------------------------------
0.organizatio...
How to configure git bash command line completion?
...
On Linux
on most distributions, git completion script is installed into /etc/bash_completion.d/ (or /usr/share/bash-completion/completions/git) when you install git, no need to go to github. You just need to use it - add this line to your .bashrc:
source /etc/bash_completio...
Can you connect to Amazon ElastiСache Redis outside of Amazon?
...rules for the cache cluster and
NAT instance.
Validate the rules.
Add an iptables rule to the NAT
instance.
Confirm that the trusted client is able to connect to the
cluster.
Save the iptables configuration.
For a more detailed description see the aws guide:
https://docs.aws.amazon.com/Amazon...
Node.js app can't run on port 80 even though there's no other process blocking the port
... 80 you can redirect port 80 to your application's port (>1024) using
iptables -t nat -I PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 3000
This will work if your application is running on port 3000.
share
...
What does multicore assembly language look like?
... All the other threads start up in a special sleep state called Wait-for-SIPI. As part of its initialization, the primary thread sends a special inter-processor-interrupt (IPI) over the APIC called a SIPI (Startup IPI) to each thread that is in WFS. The SIPI contains the address from which that t...
Is there a float input type in HTML5?
...
@relipse see here: stackoverflow.com/q/3790935/1180785 but be sure to read the comments for each answer; it looks like all options have drawbacks, and you'll need to see what fits your particular needs.
– Da...
C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术
...squo;。（我觉得这是一个GDB的bug，VC++的调试器就能很好的显示）
我们继续，如果你sizeof(char[0])或是 sizeof(int[0]) 之类的零长度数组，你会发现sizeof返回了0，这就是说，零长度的数组是存在于结构体内的，但是不占结构体的size。...
How to convert SQL Query result to PANDAS Data Structure?
...ill only work with results obtained using sqlalchemy. Pyodbc uses the description attribute for columns.
– Filip
Aug 29 '19 at 21:06
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