大约有 44,000 项符合查询结果（耗时：0.0369秒） [XML]
get UTC time in PHP
... DateTimeZone.
The DateTime __construct() documentation suggests passing "now" as the first parameter when creating a DateTime instance and specifying a timezone to get the current time.
$date_utc = new \DateTime("now", new \DateTimeZone("UTC"));
echo $date_utc->format(\DateTime::RFC850); # Sa...
How do you use the ? : (conditional) operator in JavaScript?
...sion where an if...else
statement would be awkward. For
example:
var now = new Date();
var greeting = "Good" + ((now.getHours() > 17) ? " evening." : " day.");
The example creates a string
containing "Good evening." if it is
after 6pm. The equivalent code using
an if...else state...
Issue pushing new code in Github
I created a new repository on Github which has only Readme.md file now.
14 Answers
14
...
Difference between std::system_clock and std::steady_clock?
...able 59 C1 and C2 denote clock types. t1 and t2 are values returned by C1::now() where the call returning t1 happens before the call returning t2 and both of these calls occur before C1::time_point::max(). [ Note: this means C1 did not wrap around between t1 and t2. —end note ]
Expression: ...
What does -1 mean in numpy reshape?
...haped into a vector using reshape function with parameter -1. But I don't know what -1 means here.
9 Answers
...
How to add a custom Ribbon tab using VBA?
...ustom Tab. You will notice that the basic code is automatically generated. Now you are all set to edit it as per your requirements.
Let's inspect the code
label="Custom Tab": Replace "Custom Tab" with the name which you want to give your tab. For the time being let's call it "Jerome".
The belo...
Computational complexity of Fibonacci Sequence
I understand Big-O notation, but I don't know how to calculate it for many functions. In particular, I've been trying to figure out the computational complexity of the naive version of the Fibonacci sequence:
...
Re-sign IPA (iPhone)
...is built into the binary, so you can only resign using the same app ID. I know I was not able to resign with a different app ID.
– Michael Baltaks
Dec 5 '11 at 21:12
...
Swift: Convert enum value to String?
...
Not sure in which Swift version this feature was added, but right now (Swift 2.1) you only need this code:
enum Audience : String {
case public
case friends
case private
}
let audience = Audience.public.rawValue // "public"
When strings are used for raw values, the implic...
Git push failed, “Non-fast forward updates were rejected”
...
This command worked me, however I'd like to know, why this doesn't: git pull? The remote is equal to origin, so it actually runs: git pull origin. Shouldn't it update all the branches?
– Karlen Kishmiryan
Apr 15 '15 at 13:35
...