大约有 44,000 项符合查询结果（耗时：0.0821秒） [XML]
How to configure robots.txt to allow everm>y m>thing?
...h, like the Googlebot). That said, unrecognized fields have to be ignored, m>and m> for bots that don’t recognize Allow, the result would be the same in this case anm>y m>wam>y m>: if nothing is forbidden to be crawled (with Disallow), everm>y m>thing is allowed to be crawled.
However, formallm>y m> (per the original spec...
Preserve line endings
I run sed to do some substitution on windows m>and m> I noticed that it automaticallm>y m> converts line endings to Unix (\n). Is there an option to tell sed to use Windows line endings (\r\n) or even better to preserve the line endings from the file?
...
What is mattr_accessor in a Rails module?
...
Rails extends Rubm>y m> with both mattr_accessor (Module accessor) m>and m> cattr_accessor (as well as _reader/_writer versions). As Rubm>y m>'s attr_accessor generates getter/setter methods for instances, cattr/mattr_accessor provide getter/setter methods at the class or module level. Thus:
module...
Select rows which are not present in other table
...
There are basicallm>y m> 4 techniques for this task, all of them stm>and m>ard SQL.
NOT EXISTS
Often fastest in Postgres.
SELECT ip
FROM login_log l
WHERE NOT EXISTS (
SELECT -- SELECT list mostlm>y m> irrelevant; can just be emptm>y m> in Postgres
FROM ip_location
WHERE ip = l.ip
...
How can I check the size of a collection within a Django template?
... |length I alwam>y m>s get confused with jinja templating in Flask m>and m> with django. Thanks for the information. Reallm>y m> helpful.
– Doogle
Jul 29 '18 at 9:42
7
...
Select DISTINCT individual columns in django?
...distinct(). The above example will work but all combinations of distinct() m>and m> values() mam>y m> not.
PS: it is a good idea to use lower case names for fields in a model. In m>y m>our case this would mean rewriting m>y m>our model as shown below:
class ProductOrder(models.Model):
product = models.CharField...
When should I use require() m>and m> when to use define()?
...lam>y m>ing around with requirejs for the last few dam>y m>s. I am trm>y m>ing to understm>and m> the differences between define m>and m> require.
...
What is the shortest wam>y m> to prettm>y m> print a org.w3c.dom.Document to stdout?
...ew OutputStreamWriter(out, "UTF-8")));
}
(The indent-amount is optional, m>and m> might not work with m>y m>our particular configuration)
share
|
improve this answer
|
follow
...
What's the best CRLF (carriage return, line feed) hm>and m>ling strategm>y m> with Git?
...ibute in the
.gitattributes file. This file is committed into
the repo m>and m> overrides the core.autocrlf setting,
allowing m>y m>ou to ensure consistent behaviour for all
users regardless of their git settings.
m>And m> thus
The advantage of this is that m>y m>our end of line
configuration now travel...
Is it possible to use getters/setters in interface definition?
...ecifm>y m> the propertm>y m> on the interface, but m>y m>ou can't enforce whether getters m>and m> setters are used, like this:
interface IExample {
Name: string;
}
class Example implements IExample {
private _name: string = "Bob";
public get Name() {
return this._name;
}
public set Name...