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What is the difference between the kernel space and the user space?
...ler: I'm not sure what gave you that idea, but no, not at all. At the same time, a user-space process will normally have some (more or less hidden) kernel-space memory, so (for example) your process will have a user-space stack, and a kernel-space stack that's used when you make OS calls that need t...
How to serialize an object into a string
... The fatal flaw in this is that class definitions tend to change over time - if such a change occurs you will be unable to deserialize! Adding a serialVersionUID to SomeClass will protect against new fields being added but if fields are removed you'll be screwed. It's worth reading what Joshu...
Immutable array in Java
...sn't influence the original array, then you'd need to clone the array each time:
public int[] getFooArray() {
return fooArray == null ? null : fooArray.clone();
}
Obviously this is rather expensive (as you'll create a full copy each time you call the getter), but if you can't change the interfa...
Regex to test if string begins with http:// or https://
...
^ for start of the string pattern,
? for allowing 0 or 1 time repeat. ie., s? s can exist 1 time or no need to exist at all.
/ is a special character in regex so it needs to be escaped by a backslash \/
/^https?:\/\//.test('https://www.bbc.co.uk/sport/cricket'); // true
/^https?:...
How to find and return a duplicate value in array
... Except quadratic for something that can be solved in linear time.
– jasonmp85
Mar 28 '13 at 7:47
19
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Sql query to insert datetime in SQL Server
I want to insert a datetime value into a table(SQL Server) using the sql query below
7 Answers
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What is a handle in C++?
...std::vector. Your object may be at different memory locations at different times during execution of a program, which means your pointer to that memory will change values. With a handle it never changes, it always references your object. Imagine saving a state of a program (like in a game) - you wou...
Warning: mysql_connect(): [2002] No such file or directory (trying to connect via unix:///tmp/mysql.
...plications/MAMP/tmp/mysql/mysql.sock mysql.sock
Hope this saves you some time.
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How to unstash only certain files?
... stash@{0} -- <filename>" restores the version of the file as of the time when the stash was performed -- it does NOT apply (just) the stashed changes for that file.
To do the latter:
git diff stash@{0}^1 stash@{0} -- <filename> | git apply
(as commented by peterflynn, you might need |...
Is it possible to print a variable's type in standard C++?
...is answer from Jamboree shows how to get the type name in C++14 at compile time. It is a brilliant solution for a couple reasons:
It's at compile time!
You get the compiler itself to do the job instead of a library (even a std::lib). This means more accurate results for the latest language featu...