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How do I create a simple 'Hello World' module in Magento?
...oper mode" (google it). With developer mode on, Magento will crash on any errors in XML files.
– Alan Storm
May 4 '13 at 4:53
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show 13 mor...
Lock-free multi-threading is for real threading experts
...based solution can be easier to reason about, easier to implement and less error-prone than a half-baked locking implementation that tries to be smart. (It is however - subjectively - also true for an STM based solution.) I would also bet that it is light-years easier to correctly write a decent dis...
Referring to the null object in Python
...e same object, which makes None a singleton. Newcomers to Python often see error messages that mention NoneType and wonder what it is. It's my personal opinion that these messages could simply just mention None by name because, as we'll see shortly, None leaves little room to ambiguity. So if you se...
How do you fix a bad merge, and replay your good commits onto a fixed merge?
... ' when using Windows, or you'll get an unhelpfully phrased "bad revision" error.
– c z
Mar 14 '17 at 8:58
...
Do sessions really violate RESTfulness?
...nsitions have been performed (PUT, POST, DELETE)? This test would exclude errors or authentication requests being returned, because in that case, the request has not yet made it to the server, meaning the servlet or application that will return the document corresponding to the given URI.
Likewise...
Single Page Application: advantages and disadvantages [closed]
...l), then the number of requests to the server (read "possibilities for 503 errors that wreck your user experience") is dramatically reduced. In fact, a SPA makes it possible to do entirely offline processing, which is huge in some situations.
Performance is certainly better with client-side renderin...
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
...exactly like the parameters of function foo. Otherwise it will throw a TypeError:
>>> mydict = {'x':1,'y':2,'z':3,'badnews':9}
>>> foo(**mydict)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: foo() got an unexpected keyword argument...
How to integrate nodeJS + Socket.IO and PHP?
... icon: icon,
});
})
.fail(function() {
console.log("error");
// send notification when post failed
socket.emit('new_notification', {
message: 'Messge was failed',
title: title,
icon: icon,
});
})
.always(function() {
co...
What's to stop malicious code from spoofing the “Origin” header to exploit CORS?
...request and response headers as http://client1.dev, but you can see in the error that Chrome somehow knows the real origin was http://client2.dev and correctly rejects the response. Which doesn't matter at this point because the server had already accepted the spoofed request and spent my money.
...
Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference
...etime in the future, when the file has been read successfully or thrown an error.
In all cases, we have a callback which may run sometime in the future. This "sometime in the future" is what we refer to as asynchronous flow.
Asynchronous execution is pushed out of the synchronous flow. That is, t...