大约有 47,000 项符合查询结果（耗时：0.0654秒） [XML]
What does the 'Z' mean in Unix timestamp '120314170138Z'?
...
Yes. 'Z' stands for Zulu time, which is also GMT and UTC.
From http://en.wikipedia.org/wiki/Coordinated_Universal_Time:
The UTC time zone is sometimes denoted by the letter Z—a reference to
the equivalent nautical time zone (GMT), which has been denoted by a Z
since about ...
MongoDB, remove object from array
...
I have a document like
I have to delete address from address array
After searching lots on internet I found the solution
Customer.findOneAndUpdate(query, {$pull: {address: addressId}}, function(err, data){
if(err) {
return res.status(500).json({'error' ...
How does having a dynamic variable affect performance?
...l to Foo, one for the dynamic addition, and one for the dynamic conversion from dynamic to int. Each one has its own runtime analysis and its own cache of analysis results.
Make sense?
share
|
impr...
Calculating days between two dates with Java
...
UPDATE: The original answer from 2013 is now outdated because some of the classes have been replaced. The new way of doing this is using the new java.time classes.
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("dd MM yyyy");
String inputString1 =...
How to return multiple lines JSX in another return statement in React?
...menu code into a single component "anchored" at ul than to shoehorn in lis from multiple sources. I think it made also the mental model for the UI a little cleaner.
– ruffin
Mar 24 '17 at 17:43
...
Disabled UIButton not faded or grey
...lutions that change the look depending on control state like this and this from below are a much better idea. They're using the built in mechanism to achieve an automatic change, rather than needing to explicitly update the control's look depending on its state.
– Benjohn
...
SQL keys, MUL vs PRI vs UNI
...
DESCRIBE <table>;
This is acutally a shortcut for:
SHOW COLUMNS FROM <table>;
In any case, there are three possible values for the "Key" attribute:
PRI
UNI
MUL
The meaning of PRI and UNI are quite clear:
PRI => primary key
UNI => unique key
The third possibility, MUL...
How can I run PowerShell with the .NET 4 runtime?
...
I figured out my problem from above. You have to put the config file in the 64-bit directory when running on a 64-bit OS. The 32-bit powershell executable seems to pick up the change just fine from there.
– Chris McKenzie
...
Generating PDF files with JavaScript
I’m trying to convert XML data into PDF files from a web page and I was hoping I could do this entirely within JavaScript. I need to be able to draw text, images and simple shapes. I would love to be able to do this entirely in the browser.
...
How do I type using my keyboard on the iphone simulator?
...
Really Helpful, I too was struggling from couple of days.
– ChenSmile
Oct 29 '14 at 9:42
...