大约有 42,000 项符合查询结果（耗时：0.0548秒） [XML]
Docker build “Could not resolve 'archive.ubuntu.com'” apt-get fails to install anything
...pears after a long time
Server: 8.8.8.8
Address 1: 8.8.8.8
If the command appears to hang, but eventually spits out the error "can't resolve 'google.com'", then you have the same problem as me.
The nslookup command queries the DNS server 8.8.8.8 in order to turn the text address of 'google.com...
Providing a default value for an Optional in Swift?
...recommend sticking to the ternary operator as other developers will understand that much more quickly without having to investigate the or method
Note: I started a module to add common helpers like this or on Optional to swift.
...
How to get Core Data object from specific Object ID?
...se comment.)
[eta.: Another important difference between the first method and the other two is that existingObjectWithID:error: never returns a fault; it always fetches the whole object for you. If you're trying to avoid that (e.g. working with an expensive-to-fetch object with a big blob property)...
POST data in JSON format
I have some data that I need to convert to JSON format and then POST it with a JavaScript function.
4 Answers
...
Getting visitors country from their IP
...nfo("Visitor", "Country Code"); // IN
echo ip_info("Visitor", "State"); // Andhra Pradesh
echo ip_info("Visitor", "City"); // Proddatur
echo ip_info("Visitor", "Address"); // Proddatur, Andhra Pradesh, India
print_r(ip_info("Visitor", "Location")); // Array ( [city] => Proddatur [state] => An...
Make a link use POST instead of GET
... was wondering if anyone knows how to make a hyperlink pass some variables and use POST (like a form) as opposed to GET.
11...
map function for objects (instead of arrays)
...For that matter I wanted to add another solution that returns a new object and leaves the original object as it is:
var myObject = { 'a': 1, 'b': 2, 'c': 3 };
// returns a new object with the values at each key mapped using mapFn(value)
function objectMap(object, mapFn) {
return Object.k...
How to compile a static library in Linux?
...e into a file named out.a. Is it sufficient to simply compile with the command gcc -o out.a out.c ? I'm not quite familiar with gcc , hope anyone can give me a hand.
...
How do I list all versions of a gem available at a remote site?
... if you only want to look at that one, you could search for gem list ^rhc$ and the "--remote" and "--all" flags can be abbreviated and combined for gem list ^rhc$ -ra
– Joshua Cheek
Feb 5 '12 at 4:19
...
node.js fs.readdir recursive directory search
...ctory search using fs.readdir? I realise that we could introduce recursion and call the read directory function with the next directory to read, but am a little worried about it not being async...
...