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The performance impact of using instanceof in Java
...casting it is a little faster than doing an instanceof, but the difference my quick test found was 10-20ms over 10,000,000 iterations. If "object" isn't an ObjT, though, catching the exception was over 3000x slower - over 31,000ms vs ~10ms for the instanceof.
– Steve
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What does $1 [QSA,L] mean in my .htaccess file?
I need to change my .htaccess and there are two lines which I don't understand.
3 Answers
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How do I print out the contents of an object in Rails for easy debugging?
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This is not phrased correctly. puts my_model_instance will not call to_s. You will have to explicitly do that: puts my_model_instance.to_s
– thisismydesign
Feb 9 '18 at 18:26
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PHP session lost after redirect
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Check the webserver error log too; in my case, there was an error "Failed to write session data (files). Please verify that the current setting of session.save_path is correct". The permissions were wrong on the save_path directory.
– timbon...
Are there legitimate uses for JavaScript's “with” statement?
Alan Storm's comments in response to my answer regarding the with statement got me thinking. I've seldom found a reason to use this particular language feature, and had never given much thought to how it might cause trouble. Now, I'm curious as to how I might make effective use of with , while a...
How to pick just one item from a generator?
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Create a generator using
g = myfunct()
Everytime you would like an item, use
next(g)
(or g.next() in Python 2.5 or below).
If the generator exits, it will raise StopIteration. You can either catch this exception if necessary, or use the default ar...
Creating runnable JAR with Gradle
...ld.gradle, do I really have to add manually the class path or can I re-use my dependency declaration?
– Hannes
Feb 12 '14 at 8:03
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Testing service in Angular returns module is not defined
I am trying to run the default service unit test in my project (Taken from the Angular Seed project on GitHub), but I keep getting the error "module is not defined".
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Python Dictionary Comprehension
...ve to specify the keys and values, although of course you can specify a dummy value if you like.
>>> d = {n: n**2 for n in range(5)}
>>> print d
{0: 0, 1: 1, 2: 4, 3: 9, 4: 16}
If you want to set them all to True:
>>> d = {n: True for n in range(5)}
>>> print ...
Maven2 property that indicates the parent directory
...ty of your choice to the absolute-path of any of the project's modules. In my case I set it to the root module...
In my project root pom:
<plugin>
<groupId>org.commonjava.maven.plugins</groupId>
<artifactId>directory-maven-plugin</artifactId>
<version>...