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How do I upgrade my ruby 1.9.2-p0 to the latest patch level using rvm?
...sk RVM to list the ruby versions available to install by running rvm list known.
In the output you should now see:
# MRI Rubies
...
[ruby-]1.9.2[-p320]
...
The square brackets around the patch level indicate that this is currently RVM's default patch level for ruby 1.9.2.
Finally, to install th...
MySQL - SELECT WHERE field IN (subquery) - Extremely slow why?
...U, I've been trying to figure out a good way to do this for a couple hours now. This worked perfectly. Wish I could give you more upvotes! This should definitely be the answer.
– thaspius
Jan 27 '16 at 18:25
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The target … overrides the `OTHER_LDFLAGS` build setting defined in `Pods/Pods.xcconfig
...
@msmq It's been a long time now, but do you remember the workaround that you tried and got it working? $(inherited) is already there at the top line but it doesn't work for me :/
– Kostas Dimakis
Aug 27 '19 at 21:5...
Type Checking: typeof, GetType, or is?
...foo = (Foo)obj;
requires two.
Update (Jan 2020):
As of C# 7+, you can now cast inline, so the 'is' approach can now be done in one cast as well.
Example:
if(obj is Foo newLocalFoo)
{
// For example, you can now reference 'newLocalFoo' in this local scope
Console.WriteLine(newLocalFoo...
Consistency of hashCode() on a Java string
... you shouldn't rely on a hash code implementation remaining the same, it's now documented behaviour for java.lang.String, so changing it would count as breaking existing contracts.
Wherever possible, you shouldn't rely on hash codes staying the same across versions etc - but in my mind java.lang.St...
In C++, is it still bad practice to return a vector from a function?
...ts—such as vectors/arrays—in many programming languages. Is this style now acceptable in C++0x if the class has a move constructor, or do C++ programmers consider it weird/ugly/abomination?
...
Is there an equivalent of 'which' on the Windows command line?
...
@mawg, the original was for where you know the extension since it mirrors which under UNIX (where that extension-adding trickery doesn't occur). I've now added one which can do what you wish but it's no longer a simple command so much as a script. It first tries t...
How to set breakpoints in inline Javascript in Google Chrome?
...
The tab is called Sources instead of Scripts now.
– CoderDennis
Aug 30 '12 at 21:57
1
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What are Long-Polling, Websockets, Server-Sent Events (SSE) and Comet?
...ge which opens a connection with the server.
The server and the client can now send each other messages when new data (on either side) is available.
Real-time traffic from the server to the client and from the client to the server
You'll want to use a server that has an event loop
With WebSockets ...
How to make a Python script run like a service or daemon in Linux
...ike so:
import os, sys
fpid = os.fork()
if fpid!=0:
# Running as daemon now. PID is fpid
sys.exit(0)
Of course you also need to implement an endless loop, like
while 1:
do_your_check()
sleep(5)
Hope this get's you started.
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