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Why do most fields (class members) in Android tutorial start with `m`?
...se rules, but I'm confused with this m rule. What does it stand for? I'm a PHP developer. "We" use first letters of variables as indication of type, like 'b' for boolean, 'i' for integer and so on.
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How to allocate aligned memory only using the standard library?
...swer
{
void *mem = malloc(1024+16);
void *ptr = ((char *)mem+16) & ~ 0x0F;
memset_16aligned(ptr, 0, 1024);
free(mem);
}
Fixed answer
{
void *mem = malloc(1024+15);
void *ptr = ((uintptr_t)mem+15) & ~ (uintptr_t)0x0F;
memset_16aligned(ptr, 0, 1024);
free(me...
What is the logic behind the “using” keyword in C++?
...shall not appear in the type-id.
Bjarne Stroustrup provides a practical example:
typedef void (*PFD)(double); // C style typedef to make `PFD` a pointer to a function returning void and accepting double
using PF = void (*)(double); // `using`-based equivalent of the typedef above
using P = []...
How does Zalgo text work?
...d you can mix “combining above” and “combining below” marks.
The sample text in the question starts with:
LATIN CAPITAL LETTER H - H
COMBINING LATIN SMALL LETTER T - ͭ
COMBINING GREEK KORONIS - ̓
COMBINING COMMA ABOVE - ̓
COMBINING DOT ABOVE - &#...
How to use glob() to find files recursively?
...enerator alows you to process each file as it is found, instead of finding all the files and then processing them.
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Is there a difference between x++ and ++x in java?
Is there a difference between ++x and x++ in java?
16 Answers
16
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“is” operator behaves unexpectedly with integers
... use == and != to compare for equality and inequality, respectively. For example:
>>> a = 1000
>>> a == 1000 # Test integers like this,
True
>>> a != 5000 # or this!
True
>>> a is 1000 # Don't do this! - Don't use `is` to test integers!!
False
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What is the motivation for bringing Symbols to ES6?
...The mechanism doesn't have to be reflection - C++, Java, C#, Ruby, Python, PHP, Objective-C all allow access one way or another if one really wants to. It's not really about ability but communication.
– Esailija
May 14 '14 at 15:48
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How to detect if URL has changed after hash in JavaScript
...hange event on window.
In some old browsers, you need a timer that continually checks location.hash. If you're using jQuery, there is a plugin that does exactly that.
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In Perl, how can I read an entire file into a string?
...
before reading from the file handle. See How can I read in an entire file all at once?, or
$ perldoc -q "entire file"
See Variables related to filehandles in perldoc perlvar and perldoc -f local.
Incidentally, if you can put your script on the server, you can have all the modules you want. See ...