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What is the difference between “text” and new String(“text”)?
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new String("text");
explicitly creates a new and referentially distinct instance of a String object; String s = "text"; may reuse an instance from the string constant pool if one is available.
You very rarely would ever want to use the new String(anotherString) constru...
The relationship could not be changed because one or more of the foreign-key properties is non-nulla
I am getting this error when I GetById() on an entity and then set the collection of child entities to my new list which comes from the MVC view.
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Are class names in CSS selectors case sensitive?
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CSS selectors are generally case-insensitive; this includes class and ID selectors.
But HTML class names are case-sensitive (see the attribute definition), and that's causing a mismatch in your second example. This has not changed in HTML5.1
This is because the case-sensitivity of selecto...
JavaScript variables declare outside or inside loop?
...rmance, in JavaScript or ActionScript.
var is a directive for the parser, and not a command executed at run-time. If a particular identifier has been declared var once or more anywhere in a function body(*), then all use of that identifier in the block will be referring to the local variable. It ma...
What are the differences between ipython and bpython?
What does ipython have that bpython lacks and vice versa? How do the two differ?
2 Answers
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C++ compiling on Windows and Linux: ifdef switch [duplicate]
I want to run some c++ code on Linux and Windows. There are some pieces of code that I want to include only for one operating system and not the other. Is there a standard #ifdef that once can use?
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How to add a vertical Separator?
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Works perfectly well in both horizontal and vertical Menu between MenuItems as well. Always nicely stretches to match the height/width of the menu.
– natiiix
Aug 6 at 18:05
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Profiling Django
...ngo Debug Toolbar. It will show you what queries are executed on each page and how much time they take. It's a really useful, powerful and easy to use tool.
Also, read recommendations about Django performance in Database access optimization from the documentation.
And Django performance tips by
J...
How to inspect FormData?
I've tried console.log and looping through it using for in .
15 Answers
15
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What is the difference between vmalloc and kmalloc?
I've googled around and found most people advocating the use of kmalloc , as you're guaranteed to get contiguous physical blocks of memory. However, it also seems as though kmalloc can fail if a contiguous physical block that you want can't be found.
What are the advantages of having a contig...