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How to use redis PUBLISH/SUBSCRIBE with nodejs to notify clients when data values change?
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123
OLD only use a reference
Dependencies
uses express, socket.io, node_redis and last but not l...
How to 'minify' Javascript code
...MS=864e5;
var a=10;
a=1+a;
a=a*2;
//same as
a=++a*2;
Some nice articles/sites i found about bitwise/shorthand:
http://mudcu.be/journal/2011/11/bitwise-gems-and-other-optimizations/
http://www.140byt.es/
http://www.jquery4u.com/javascript/shorthand-javascript-techniques/
There are also many js...
How to initialize log4j properly?
... neither will log4j. ;)
See also:
Short introduction to log4j at Apache site
Apache: Logging Services: FAQ at Apache site
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PHP + MySQL transactions examples
...(mysql_error());
$query = "INSERT INTO employee (ssn,name,phone) values ('123-45-6789','Matt','1-800-555-1212')";
begin(); // transaction begins
$result = mysql_query($query);
if(!$result){
rollback(); // transaction rolls back
echo "transaction rolled back";
exit;
}else{
commit(...
Putty: Getting Server refused our key Error
...tNumber = 22,
HostName = "192.168.1.188",
UserName = "user123",
//Password = "Password1",
SshHostKeyFingerprint = @"ssh-rsa 2048 qu0f........................ddowUUXA="
};
ops.SshPrivateKeyPath = @"C:\temp\rsa-key-20190505.ppk";
using (Session session = ...
How do I return rows with a specific value first?
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For Postgres, this worked for me: ORDER BY id = 123 DESC, name ASC
– user1032752
Oct 6 '16 at 21:27
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How to define two angular apps / modules in one page?
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123
Only one AngularJS application can be auto-bootstrapped per HTML document. The first ngApp ...
Checking network connection
... the IP addresses for google.com. Change http://216.58.192.142 to whatever site can be expected to respond quickly.
This fixed IP will not map to google.com forever. So this code is
not robust -- it will need constant maintenance to keep it working.
The reason why the code above uses a fixed IP ...
What database does Google use?
...HBase. HBase is part of the larger Hadoop project which according to their site "is a software platform that lets one easily write and run applications that process vast amounts of data." Some of the benchmarks are quite impressive. Their site is at http://hadoop.apache.org.
...
Do you have to include ?
...icon.
Naming the file "favicon.ico" and putting it in the root of your website is the method "discouraged" by W3C:
Method 2 (Discouraged): Putting the favicon at a predefined URI
A second method for specifying a favicon relies on using a predefined URI to identify the image: "/favicon", which...