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How to add one day to a date? [duplicate]
... avoid the java.util.Date class altogether. But if you must do so, you can convert between the troublesome old legacy date-time classes and the modern java.time classes. Look to new methods added to the old classes.
Instant
The Instant class, is close to being equivalent to Date, both being a mome...
Difference between `constexpr` and `const`
... for example, template parameters and array-size specifiers:
template<int N>
class fixed_size_list
{ /*...*/ };
fixed_size_list<X> mylist; // X must be an integer constant expression
int numbers[X]; // X must be an integer constant expression
But note:
Declaring somethin...
Select objects based on value of variable in object using jq
...h key names, e.g. FOO, BAR)?
Jq provides to_entries and from_entries to convert between objects and key-value pair arrays. That along with map around the select
These functions convert between an object and an array of key-value
pairs. If to_entries is passed an object, then for each k: v ...
what is the unsigned datatype?
...
unsigned really is a shorthand for unsigned int, and so defined in standard C.
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Constant pointer vs Pointer to constant [duplicate]
...
const int* ptr;
declares ptr a pointer to const int type. You can modify ptr itself but the object pointed to by ptr shall not be modified.
const int a = 10;
const int* ptr = &a;
*ptr = 5; // wrong
ptr++; // right
Whi...
How can I calculate the time between 2 Dates in typescript
...culate the difference you have to put the + operator,
that way typescript converts the dates to numbers.
+new Date()- +new Date("2013-02-20T12:01:04.753Z")
From there you can make a formula to convert the difference to minutes or hours.
...
rails i18n - translating text with links inside
... can dry it a bit more.
I made one helper in my application_helper.rb:
# Converts
# "string with __link__ in the middle." to
# "string with #{link_to('link', link_url, link_options)} in the middle."
def string_with_link(str, link_url, link_options = {})
match = str.match(/__([^_]{2,30})__/)
if...
Are typedef and #define the same in c?
...ect, but it's better to use the proper one for your needs
#define MY_TYPE int
typedef int My_Type;
When things get "hairy", using the proper tool makes it right
#define FX_TYPE void (*)(int)
typedef void (*stdfx)(int);
void fx_typ(stdfx fx); /* ok */
void fx_def(FX_TYPE fx); /* error */
...
Facebook Architecture [closed]
... probably time wasting task. Hiphop only supports so much, it can't simply convert everything to C++. So what does this tell us? Well, it tells us that Facebook is NOT fully taking advantage of the PHP language. It's not using the latest 5.3 and I'm willing to bet there's still a lot that is PHP 4 c...
Learning Python from Ruby; Differences and Similarities
...y code doesn't feel as compact. It's also not as efficient since it first converts the values array into a shorter intermediate array containing the values greater than 15. Then, it takes the intermediate array and generates a final array containing the squares of the intermediates. The intermedi...