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When NOT to call super() method when overriding?
...super.save(); // Performs the save logic for A
save(b); // Perform additional save logic
}
}
A call to B.save() will perform the save() logic for both A and B, in this particular order. If you weren't calling super.save() inside B.save(), A.save() wouldn't be called. And if you called ...
Is it acceptable and safe to run pip install under sudo?
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Burhan KhalidBurhan Khalid
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How to load all modules in a folder?
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Anurag UniyalAnurag Uniyal
73.8k3737 gold badges161161 silver badges209209 bronze badges
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No connection could be made because the target machine actively refused it?
...parameter is often configurable if you control the server, and is likely read from some settings file or the registry. Investigate how to configure your server.
If you wrote the server, you might have heavy processing in the accept of your socket, and this can be better moved to a separate worker-...
How do I output the difference between two specific revisions in Subversion?
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bahrep
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answered Jul 24 '12 at 15:57
RedFilterRedFilter
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UIImagePickerController error: Snapshotting a view that has not been rendered results in an empty sn
...initialize your Camera in your UIViewController, only after the view has Loaded and with a timeout:
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
//show camera...
if (!hasLoadedCamera)
[self performSelector:@selector(showcamera) withObject:nil afterDela...
SLF4J: Failed to load class “org.slf4j.impl.StaticLoggerBinder”. error
...rm this error.
Workaround: is to use external maven inside m2eclipse, instead of it's embedded maven.
That is done in three steps:
1 Install maven on local machine (the test-machine was Ubuntu 10.10)
mvn --version
Apache Maven 2.2.1 (rdebian-4) Java version: 1.6.0_20 Java home:
/usr/lib/jvm/java-6...
JSON.NET Error Self referencing loop detected for type
...e chain
If you want to use this fix in a non-api ASP.NET project, you can add the above line to Global.asax.cs, but first add:
var config = GlobalConfiguration.Configuration;
If you want to use this in .Net Core project, you can change Startup.cs as:
var mvc = services.AddMvc(options =>
...
What is the difference between visibility:hidden and display:none?
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Casimir Crystal
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answered Sep 25 '08 at 12:40
kemiller2002kemiller2002
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Can you use a trailing comma in a JSON object?
...o worry about all browsers.
In general I try turn the problem around, and add the comma before the actual value, so you end up with code that looks like this:
s.append("[");
for (i = 0; i < 5; ++i) {
if (i) s.append(","); // add the comma only if this isn't the first entry
s.appendF("\"%d\"...