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How do I list all cron jobs for all users?
...from the
# beginning of each line.
function clean_cron_lines() {
while read line ; do
echo "${line}" |
egrep --invert-match '^($|\s*#|\s*[[:alnum:]_]+=)' |
sed --regexp-extended "s/\s+/ /g" |
sed --regexp-extended "s/^ //"
done;
}
# Given a stream...
Memcache(d) vs. Varnish for speeding up 3 tier web architecture
...s will result in an overhead and little benefit for modified pages.
Mostly read -- Varnish will probably cover most of it.
Similar read & write -- Varnish will serve a lot of the pages for you, Memcache will provide info for pages that have a mixture of known and new data allowing you to generat...
When to use thread pool in C#? [closed]
I have been trying to learn multi-threaded programming in C# and I am confused about when it is best to use a thread pool vs. create my own threads. One book recommends using a thread pool for small tasks only (whatever that means), but I can't seem to find any real guidelines. What are some consid...
How much faster is Redis than mongoDB?
...
Rough results from the following benchmark: 2x write, 3x read.
Here's a simple benchmark in python you can adapt to your purposes, I was looking at how well each would perform simply setting/retrieving values:
#!/usr/bin/env python2.7
import sys, time
from pymongo import Connecti...
How do I show the schema of a table in a MySQL database?
... looking to figure out the "db_name" part, and this solution assumes you already know that
– Antonio Ortells
Dec 20 '16 at 21:36
41
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How to disable the warning 'define' is not defined using JSHint and RequireJS
...}
}
From the JSHint Docs - the false (the default) means the variable is read-only.
If you are defining globals only for a specific file, you can do this:
/*global describe, it, before, beforeEach, after, afterEach */
s...
Does using final for variables in Java improve garbage collection?
...
It wouldn't be possible to assign null to an already created final object, then perhaps final instead of help, could make things harder
– Hernán Eche
Dec 14 '11 at 21:05
...
Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
In the x86-64 Tour of Intel Manuals , I read
3 Answers
3
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What is Double Brace initialization in Java?
...s like that make me question Java syntax though. If you're not an expert already it can be very tricky to read and write.
– jackthehipster
Jul 9 '14 at 11:53
4
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Check if Internet Connection Exists with Javascript? [duplicate]
...ed a more robust solution you could try:
var online = navigator.onLine;
Read more about the W3C's spec on offline web apps, however be aware that this will work best in modern web browsers, doing so with older web browsers may not work as expected, or at all.
Alternatively, an XHR request to you...