大约有 40,000 项符合查询结果（耗时：0.0400秒） [XML]
Reload django object from database
...
Couldn't find details in the docs, but it properly throws a DoesNotExist exception if the underlying object was deleted when calling refresh_from_db. FYI.
– Tim Tisdall
Jan 17 at 19:26
...
What is the 'cls' variable used for in Python classes?
...
It's used in case of a class method. Check this reference for further details.
EDIT: As clarified by Adrien, it's a convention. You can actually use anything but cls and self are used (PEP8).
share
|
...
Google Chromecast sender error if Chromecast extension is not installed or using incognito
...id) you can install the extension here: https://chrome.google.com/webstore/detail/google-cast/boadgeojelhgndaghljhdicfkmllpafd/reviews?hl=en
I left a review asking for a fix. You can also do a bug report via the extension (after you install it) here. Instructions for doing so are here: https://supp...
How to list records with date from the last 10 days?
...E - INTERVAL '10 days');
The operators/functions above are documented in detail:
CURRENT_DATE
INTERVAL '10 days'
share
|
improve this answer
|
follow
|
...
How to extract public key using OpenSSL?
...
For those interested in the details - you can see what's inside the public key file (generated as explained above), by doing this:-
openssl rsa -noout -text -inform PEM -in key.pub -pubin
or for the private key file, this:-
openssl rsa -noout -text ...
Automatically open Chrome developer tools when new tab/new window is opened
...re, feel free to Star this Chromium bug: code.google.com/p/chromium/issues/detail?id=410958
– phsource
Oct 15 '14 at 21:19
1
...
Why is \r a newline for Vim?
...
:help NL-used-for-Nul
Technical detail:
<Nul> characters in the file are stored as <NL> in memory. In the display
they are shown as "^@". The translation is done when reading and writing
files. To match a <Nul> with a search pat...
What is the main difference between PATCH and PUT request?
...used to update some portion of existing resource.
For Example:
Customer Details:
// This is just a example.
firstName = "James";
lastName = "Anderson";
email = "email@domain.com";
phoneNumber = "+92 1234567890";
//..
When we want to update to entire record ? we have to use Http PUT verb for t...
Difference between . and : in Lua
...way around; good code should not make any assumptions about implementation details of unrelated code. Function calls may or may not be memoized, that doesn't mean it's good practice to call them more often than needed.
– DarkWiiPlayer
Jan 16 '19 at 17:49
...
Best practices for reducing Garbage Collector activity in Javascript
...allocation. It's called the Memory Timeline. This article describes some details. I suppose this is what you're talking about re the "sawtooth"? This is normal behavior for most GC'ed runtimes. Allocation proceeds until a usage threshold is reached triggering a collection. Normally there are d...