大约有 1,853 项符合查询结果（耗时：0.0183秒） [XML]
What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
...----------+-------+------------+
|1 | Product 1 | Name for Product 1 | 2.0 | 1 |
|2 | Product 2 | Name for Product 2 | 22.0 | 1 |
|3 | Product 3 | Name for Product 3 | 30.0 | 2 |
|4 | Product 4 | Name for Product 4 | 7.0 | 3 |
+-----+-----------+...
Filter rows which contain a certain string
... tibble 1.4.2 ✔ dplyr 0.7.4
# ✔ tidyr 0.7.2 ✔ stringr 1.2.0
# ✔ readr 1.1.1 ✔ forcats 0.3.0
# ─ Conflicts ───────────────────── tidyverse_conflicts() ─
# ✖ dplyr::filter() masks stats::filter()
# ✖ dplyr::lag() masks s...
Separate REST JSON API server and client? [closed]
... unlike Twitter.
Our project Stack
I happen to use Python. I use JsonRPC 2.0 instead of REST. I suggest REST, though I like idea of JsonRPC for various reasons. I use below libraries. Somebody considering option 2/3 might find it useful.
API Server: Python A fast web micro framework - Flask
Fron...
Read/write to Windows registry using Java
... looks like JNA will be dual licensed to allow redistribution under Apache 2.0 when JNA 4.0 is released (see github.com/twall/jna/blob/master/LICENSE).
– John McCarthy
Jun 28 '13 at 16:37
...
ASP.NET Identity's default Password Hasher - How does it work and is it secure?
...ource, you can find it on GitHub:
AspNet.Identity 3.0 and AspNet.Identity 2.0.
From the comments:
/* =======================
* HASHED PASSWORD FORMATS
* =======================
*
* Version 2:
* PBKDF2 with HMAC-SHA1, 128-bit salt, 256-bit subkey, 1000 iterations.
* (See also: SDL crypto gu...
What's the fastest way to merge/join data.frames in R?
... 1 0.532 1.000000 0.488 0.020
7 sqldf 1 2.059 3.870301 2.041 0.008
3 data.tableBetter 1 9.580 18.007519 9.213 0.220
1 aggregate 1 14.864 27.939850 13.937 0.316
2 data.tableWorst 1 152.046 285.80075...
CORS Access-Control-Allow-Headers wildcard being ignored?
...
Maybe to support HTTP/2.0 you need to add the 'PRI' method ?
– Henk Poley
Jan 15 at 9:12
|
...
What is the significance of ProjectTypeGuids tag in the visual studio project file
... {603C0E0B-DB56-11DC-BE95-000D561079B0}
ASP.NET MVC 2.0 {F85E285D-A4E0-4152-9332-AB1D724D3325}
ASP.NET MVC 3.0 {E53F8FEA-EAE0-44A6-8774-FFD645390401}
ASP.NET MVC 4.0 {E3E379DF-F4C6-4180-9B81-6769533ABE4...
How does Access-Control-Allow-Origin header work?
...eaders
Host DomainB.com
User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0
Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8,application/json
Accept-Language en-us;
Accept-Encoding gzip, deflate
Keep-Alive 115
Origin http://DomainA.com
DomainB ...
Is .NET/Mono or Java the better choice for cross-platform development? [closed]
...for the latest and greatest inventions in the .NET world, but so far, .NET 2.0 on Windows and Linux is very solid for me.
Keep in mind there are obviously many quirks to this, but most of them come from making sure you are writing portable code. While the frameworks do a great job of abstracting aw...