大约有 40,000 项符合查询结果（耗时：0.0713秒） [XML]
How do you compare structs for equality in C?
...
if the 2 structures variable are initialied with calloc or they are set with 0 by memset so you can compare your 2 structures with memcmp and there is no worry about structure garbage and this will allow you to earn time
– MOHAMED
Oct 3...
What does “Mass Assignment” mean in Laravel?
...
Mass assignment is when you send an array to the model creation, basically setting a bunch of fields on the model in a single go, rather than one by one, something like:
$user = new User(request()->all());
(This is instead of explicitly setting each value on the model separately.)
You c...
Using R to list all files with a specified extension
...f.files <- files[-grep(".xml", files, fixed=T)]
First line just lists all files from working dir. Second one drops everything containing ".xml" (grep returns indices of such strings in 'files' vector; subsetting with negative indices removes corresponding entries from vector).
"fixed" argument ...
Why does git-rebase give me merge conflicts when all I'm doing is squashing commits?
...o clean up these commits by squashing many down into a single commit. Naturally, git-rebase seems the way to go. My problem is that it ends up with merge conflicts, and these conflicts are not easy to resolve. I don't understand why there should be any conflicts at all, since I'm just squashing comm...
Retrieving the last record in each group - MySQL
...
MySQL 8.0 now supports windowing functions, like almost all popular SQL implementations. With this standard syntax, we can write greatest-n-per-group queries:
WITH ranked_messages AS (
SELECT m.*, ROW_NUMBER() OVER (PARTITION BY name ORDER BY id DESC) AS rn
FROM messages AS m...
size_t vs. uintptr_t
...at size_t is a type that can hold any array index. This means that, logically, size_t should be able to hold any pointer type. I've read on some sites that I found on the Googles that this is legal and/or should always work:
...
C# - how to determine whether a Type is a number
...iven .Net Type is a number? For example: System.UInt32/UInt16/Double are all numbers. I want to avoid a long switch-case on the Type.FullName .
...
How can I recover a lost commit in Git?
...
Accidentally dropped a commit I should have kept when rebasing. This totally saved me from redo-ing a couple hours worth of work.
– josephting
Jan 10 '19 at 6:30
...
How to sync with a remote Git repository?
...
Generally git pull is enough, but I'm not sure what layout you have chosen (or has github chosen for you).
share
|
improve this ...
Storing Data in MySQL as JSON
.... And, so, I've never done it. Then I saw that FriendFeed did this and actually made their DB scale better and decreased latency. I'm curious if I should do this. And, if so, what's the right way to do it?
...