大约有 47,000 项符合查询结果（耗时：0.0560秒） [XML]
What is in your Mathematica tool bag? [closed]
...pplication of Reap and Sow which mimics/extends the behavior of GatherBy:
SelectEquivalents[x_List,f_:Identity, g_:Identity, h_:(#2&)]:=
Reap[Sow[g[#],{f[#]}]&/@x, _, h][[2]];
This allows me to group lists by any criteria and transform them in the process. The way it works is that a c...
How to configure postgresql for the first time?
I have just installed postgresql and I specified password x during installation.
When I try to do createdb and specify any password I get the message:
...
Difference between an API and SDK
... to explain what a software interface is with an easier to visually understand hardware analogy
– Sliceoftime
May 7 '09 at 14:50
17
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Check if a JavaScript string is a URL
...}))'+ // OR ip (v4) address
'(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*'+ // port and path
'(\\?[;&a-z\\d%_.~+=-]*)?'+ // query string
'(\\#[-a-z\\d_]*)?$','i'); // fragment locator
return !!pattern.test(str);
}
shar...
Google Maps API v2: How to make markers clickable?
How to I make the markers in Android Google Maps API v2 become clickable so they will either bring up a menu with options or just start a new activity? I believe I made the markers in my app currently in a "newb" method. I didn't assign them a name or a method to be able to link it in with the rest ...
How to get hex color value rather than RGB value?
... is designed to cope with the format given by a browser when using jQuery, and this doesn't have the different white-space or captilisation consistencies you are talking about. You could also use the same regex and just remove all whitespaces and convert to lowercase before matching on rgb. P.S. You...
Remove empty space before cells in UITableView
...e first one.
Here's how to change this behavior:
a) Interface Builder
Select the view controller
Open Attributes inspector
There's a property called "Adjust scroll view insets" in IB's attribute inspector (when a view controller is selected) which is on by default. Uncheck this option:
(Image...
Oracle: how to UPSERT (update or insert into a table?)
...e mergetest(a number, b number);
call ups(10);
call ups(10);
call ups(20);
select * from mergetest;
A B
---------------------- ----------------------
10 2
20 1
s...
Default behavior of “git push” without a branch specified
I use the following command to push to my remote branch:
12 Answers
12
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Is it possible to create a remote repo on GitHub from the CLI without opening browser?
...
You can create a GitHub repo via the command line using the GitHub API. Check out the repository API. If you scroll down about a third of the way, you'll see a section entitled "Create" that explains how to create a repo via the API (right above that is a section th...