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How do I iterate over a range of numbers defined by variables in Bash?
...., echo {1..1000000} | wc reveals that the echo produces 1 line, a million words, and 6,888,896 bytes. Trying seq 1 1000000 | wc yields a million lines, a million words, and 6,888,896 bytes and is also more than seven times faster, as measured by the time command.
– George
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jQuery lose focus event
...dow the blur will move it behind all of the others. This is not a reserved word so you can declare your own variable or function called blur but if you do then you will not be able to use this method to control which object is current.
– SoftwareARM
Mar 4 '11 a...
What should go into an .h file?
..., function prototypes, and enumerations typically go in header files. In a word, "definitions".
Code files (.cpp) are designed to provide the implementation information that only needs to be known in one file. In general, function bodies, and internal variables that should/will never be accessed by...
Difference between `data` and `newtype` in Haskell
...#-}!Int {-# UNPACK #-}!Int
No pointers! The two Int fields are unboxed word-sized fields in the Book constructor.
Algebraic data types
Because of this need to erase the constructor, a newtype only works when wrapping a data type with a single constructor. There's no notion of "algebraic" newty...
Difference between abstraction and encapsulation?
...ction is not defined in terms of information hiding, e.g., note the use of words such as "ignore" and "extracting." However, we should also note the use of the words "suppress" and "suppressing" in some of the above examples. In short, you might say that abstraction dictates that some information is...
Explode string by one or more spaces or tabs
...
I think you want preg_split:
$input = "A B C D";
$words = preg_split('/\s+/', $input);
var_dump($words);
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Escaping keyword-like column names in Postgres
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Simply enclose year in double quotes to stop it being interpreted as a keyword:
INSERT INTO table (id, name, "year") VALUES ( ... );
From the documentation:
There is a second kind of identifier: the delimited identifier or
quoted identifier. It is formed by enclosing an arbitrary sequence ...
How do I find where an exception was thrown in C++?
...;libunwind.h>
namespace
{
void
print_reg(std::ostream & _out, unw_word_t reg) noexcept
{
constexpr std::size_t address_width = std::numeric_limits< std::uintptr_t >::digits / 4;
_out << "0x" << std::setfill('0') << std::setw(address_width) << reg;
}
ch...
How to negate the whole regex?
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codingBat plusOut using regex
codingBat repeatEnd using regex
codingbat wordEnds using regex
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“unary operator expected” error in Bash if condition
...x-compatible single bracket version [ ... ]. Inside a [[ ... ]] compound, word-splitting and pathname expansion are not applied to words, so you can rely on
if [[ $aug1 == "and" ]];
to compare the value of $aug1 with the string and.
If you use [ ... ], you always need to remember to double quot...