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What is the performance cost of having a virtual method in a C++ class?
...tch: 150000000 1.285
switched: 150000000 0.345367
overhead: 150000000 0.231051
virtual dispatch: 150000000 1.28969
switched: 150000000 0.345876
overhead: 150000000 0.230726
This suggests an inline type-number-switched approach is about (1.28 - 0.23) / (0.344 - 0.23) = 9.2 times as fast. Of course...
Does the default constructor initialize built-in types?
...o, they are not initialized.
This is actually a source for really strange errors as modern OSs tend to fill newly allocated memory regions with zeroes. If you expect that, it might work the first time. However, as your application keeps running, delete-ing and new-ing objects, you will sooner or la...
How can I tell if one commit is a descendant of another commit?
...of the second ,
and exit with status 0 if true, or with status 1 if not. Errors are
signaled by a non-zero status that is not 1.
For example:
git merge-base --is-ancestor origin/master master; echo $?
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Node.js setting up environment specific configs to be used with everyauth
...
return {prod settings};
default:
return {error or other settings};
}
};
Then as per Jans solution load the file and create a new instance which we could pass in a value if needed, in this case process.env.NODE_ENV is global so not needed.
var Config = require...
Django: Get list of model fields?
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What about ForeignKey? I have errors like this django.db.models.fields.related.RelatedObjectDoesNotExist: CustomModel has no custom_attribute.
– SAKrisT
Oct 17 '14 at 9:35
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How to get a path to a resource in a Java JAR file
...(file != null && !file.exists()) {
throw new RuntimeException("Error: File " + file + " not found!");
}
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How can you get the Manifest Version number from the App's (Layout) XML variables?
...orks for me. I use this and several other variables like this. @k2col what error do u get while compiling? Pls post ur gradle code
– Arun Shankar
Nov 23 '16 at 15:49
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How can I open multiple files using “with open” in Python?
...se it for file opening: "using nested() to open two files is a programming error as the first file will not be closed promptly if an exception is thrown when opening the second file."
– weronika
Sep 1 '11 at 20:49
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Add support library to Android Studio project
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In version 20.0.0 the "+" leads to an error, so you should update your answer and remove the "+" or leave a warning on this. Fore more information see: stackoverflow.com/questions/24438170/…
– Murmel
Aug 28 '14 at 19:34
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How to make a .jar out from an Android Studio project
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I got: java.lang.NoClassDefFoundError: com.loopj.android.http.RequestParams. That's my external library I'm compiling with mine.
– dum4ll3
Feb 12 '14 at 20:09
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