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How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
...pload), then ajax must be disabled on any PrimeFaces command buttons/links by ajax="false", and you must use <p:fileUpload value> with <p:commandButton action> instead of <p:fileUpload fileUploadListener> (for PrimeFaces <= 7.x) or <p:fileUpload listener> (for PrimeFaces &...
How to convert string to boolean php
...valuate to boolean true unless they have a value that's considered "empty" by PHP (taken from the documentation for empty):
"" (an empty string);
"0" (0 as a string)
If you need to set a boolean based on the text value of a string, then you'll need to check for the presence or otherwise of that ...
Best way to test exceptions with Assert to ensure they will be thrown
...is not sufficient. The exception may not be catchable - since it's thrown by a method that is invoked by reflection - or perhaps I just want to check that other conditions hold, say a transaction is rolled back or some value has still been set. In these cases I wrap it in a try/catch block that ex...
How to merge YAML arrays?
I would like to merge arrays in YAML, and load them via ruby -
5 Answers
5
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jQuery how to bind onclick event to dynamically added HTML element [duplicate]
... Indeed, when you are targeting known markup structures created by some other code. But here he was inserting the elements himself, and there is no clear selector for them (it's just an anchor, which there might be many of), so he would have to add additional markup to be able to target t...
Python unittest - opposite of assertRaises?
...hiwaylon - No, this is the correct solution in fact. The solution proposed by user9876 is conceptually flawed: if you test for the non-raising of say ValueError, but ValueError is instead raised, your test must exit with a failure condition, not an error one. On the other hand, if in running the sam...
What is the difference between the kernel space and the user space?
...s user programs so they can't mess with memory (and other resources) owned by other programs or by the OS kernel. This limits (but usually doesn't entirely eliminate) their ability to do bad things like crashing the machine.
The kernel is the core of the operating system. It normally has full acces...
Distinct by property of class with LINQ [duplicate]
... the first car from each group:
List<Car> distinct =
cars
.GroupBy(car => car.CarCode)
.Select(g => g.First())
.ToList();
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Eclipse: All my projects disappeared from Project Explorer
...ve about 200 separate project-plugins, it would be too long to do this one by one. So when selecting a root directory, choose the common folder to them all and the Import dialog will find all the projects under that dir. Saved me a lot of time and nerves ;o)
– Kuba
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What are the -Xms and -Xmx parameters when starting JVM?
...8m
The memory flag can also be specified in different sizes, such as kilobytes, megabytes, and so on.
-Xmx1024k
-Xmx512m
-Xmx8g
The Xms flag has no default value, and Xmx typically has a default value of 256 MB. A common use for these flags is when you encounter a java.lang.OutOfMemoryError.
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