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Programmatically Request Access to Contacts
...ABAddressBookRequestAccessWithCompletion(addressBookRef, ^(bool granted, CFErrorRef error) {
if (granted) {
// First time access has been granted, add the contact
[self _addContactToAddressBook];
} else {
// User denied access
// Display an alert t...
How to retrieve the current version of a MySQL database management system (DBMS)?
...--------------------+------------------------------------------+
| Variable_name | Value |
+-------------------------+------------------------------------------+
| protocol_version | 10 |
| version ...
No route matches “/users/sign_out” devise rails 3
...
Getting the same error as mmichael. This above test works for me.
– rtfminc
Jul 3 '11 at 6:42
Is volatile expensive?
After reading The JSR-133 Cookbook for Compiler Writers about the implementation of volatile, especially section "Interactions with Atomic Instructions" I assume that reading a volatile variable without updating it needs a LoadLoad or a LoadStore barrier. Further down the page I see that LoadLoad ...
#define macro for debug printing in C?
...r macro
else
do_something_useful(x, y);
And the else is now a syntax error. The do { ... } while(0) loop avoids both these problems.
There's one other way of writing the macro which might work:
/* BAD - BAD - BAD */
#define debug_print(...) \
((void)((DEBUG) ? fprintf(stderr, __...
How can I mock requests and the response?
...responses.GET, 'http://twitter.com/api/1/foobar',
json={'error': 'not found'}, status=404)
resp = requests.get('http://twitter.com/api/1/foobar')
assert resp.json() == {"error": "not found"}
assert len(responses.calls) == 1
assert responses.calls[0].request.url =...
No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin '…' is therefor
...
Why the error is raised:
JavaScript code is limited by the same-origin policy, meaning, from a page at www.example.com, you can only make (AJAX) requests to services located at exactly the same domain, in that case, exactly www.examp...
What is the difference between a strongly typed language and a statically typed language?
...e restrictions are violated, the violation is reported as a (dynamic) type error.
For example, Lua, a dynamically typed language, has a string type, a number type, and a Boolean type, among others. In Lua every value belongs to exactly one type, but this is not a requirement for all dynamically ...
Get the _id of inserted document in Mongo database in NodeJS
... console.log(result.insertedId);
})
.catch(err => {
// handle error
});
It's the same thing if you use callbacks.
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git command to show all (lightweight) tags creation dates
Is there a one liner that shows me the dates where all git lightweight tags where created ?
2 Answers
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