大约有 17,000 项符合查询结果（耗时：0.0302秒） [XML]
Django - How to rename a model field using South?
...
You can use the db.rename_column function.
class Migration:
def forwards(self, orm):
# Rename 'name' field to 'full_name'
db.rename_column('app_foo', 'name', 'full_name')
def backwards(self, orm):
# Rename 'full_...
What does void mean in C, C++, and C#?
... to be run and a pointer to the data to be passed to the function:
struct _deferred_work {
sruct list_head mylist;
.worker_func = bar;
.data = somedata;
} deferred_work;
Then a kernel thread goes over a list of deferred work and when it get's to this node it effectively executes:
bar(some...
Access key value from Web.config in Razor View-MVC3 ASP.NET
... type="text/css" rel="stylesheet" href="@Url.Content("~/Content/styles/blue_theme.min.css" )">
}
share
|
improve this answer
|
follow
|
...
How can I pass data from Flask to JavaScript in a template?
...pass it a list of tuples with the long/lat information. I know that render_template will pass these variables to the view so they can be used in HTML, but how could I pass them to JavaScript in the template?
...
How does '20 seconds' work in Scala?
...
Any idea why importing import scala.concurrent.duration._ resolves 20 seconds but actually importing the DurationConversions Trait doesn't? EDIT: Just realized what they're actually importing is DurationInt. I'm guessing this is because you can't import the actual Trait? Only a c...
Change case of a file on Windows?
...o do this in bulk? e.g. with powershell, Get-ChildItem '.' | Rename-Item {$_.Name.ToLowerCase()}
– killjoy
Nov 4 '18 at 1:23
add a comment
|
...
Visual Studio 64 bit?
...urcation point for it will be some CPU manufacturer X starts to compete x86_64 architecture taking its place on mainstream market for laptop and/or workstation,
share
|
improve this answer
...
How to create directories recursively in ruby?
...
Use mkdir_p:
FileUtils.mkdir_p '/a/b/c'
The _p is a unix holdover for parent/path you can also use the alias mkpath if that makes more sense for you.
FileUtils.mkpath '/a/b/c'
In Ruby 1.9 FileUtils was removed from the core, so ...
How do I sort an array of hashes by a value in the hash?
...by has sort! for in-place sorting, but there's no in-place variant for sort_by in Ruby 1.8. In practice, you can do:
sorted = sort_me.sort_by { |k| k["value"] }
puts sorted
As of Ruby 1.9+, .sort_by! is available for in-place sorting:
sort_me.sort_by! { |k| k["value"]}
...
How to properly seed random number generator
... a set of distinct and deterministic random sequences).
import (
crypto_rand "crypto/rand"
"encoding/binary"
math_rand "math/rand"
)
func init() {
var b [8]byte
_, err := crypto_rand.Read(b[:])
if err != nil {
panic("cannot seed math/rand package with cryptographical...