大约有 15,208 项符合查询结果（耗时：0.0327秒） [XML]
Entity Framework 4 - AddObject vs Attach
...d ObjectSet.Attach:
On the other hand, Attach is used for entities that already exist in the database. Rather than setting the
EntityState to Added, Attach results in an Unchanged EntityState, which means it has not changed since it was attached to the context. Objects that you are attaching are as...
Safely remove migration In Laravel
...
If the migration has been run (read: migrated) then you should roll back your migration to clear the history from your database table. Once you're rolled back you should be able to safely delete your migration file and then proceed with migrating again.
...
What is the best JavaScript code to create an img element
... in the above code, if the values weren't hard coded). It's also easier to read (from a JS perspective):
$('#container').append($('<img>', {
src : "/path/to/image.jpg",
width : 16,
height : 16,
alt : "Test Image",
title : "Test Image"
}));
...
Is there a typical state machine implementation pattern?
...LE that you want to drive your FSM, so you could incorporate the action of reading next char into the the macro itself:
#define FSM
#define STATE(x) s_##x : FSMCHR = fgetc(FSMFILE); sn_##x :
#define NEXTSTATE(x) goto s_##x
#define NEXTSTATE_NR(x) goto sn_##x
now you have two types of...
What linux shell command returns a part of a string? [duplicate]
...irst slash (exactly what I wanted), you can do: cut -d/ -f-1, which can be read as "cut on substrings delimited by /, only return the first one".
– ArtOfWarfare
Sep 11 '17 at 14:31
...
JPG vs. JPEG image formats
...between the two is. I have come across this question , and will certainly read through it, though at the moment I'm slightly out of time. However, from what I saw giving it a quick look, it seems not to distinguish the two extensions. In fact, it seems the file type's name is JPEG and the file ex...
Should I always use a parallel stream when possible?
...as a much higher overhead compared to a sequential one. Coordinating the threads takes a significant amount of time. I would use sequential streams by default and only consider parallel ones if
I have a massive amount of items to process (or the processing of each item takes time and is paralleliz...
How to find the extension of a file in C#?
...
You may simply read the stream of a file
using (var target = new MemoryStream())
{
postedFile.InputStream.CopyTo(target);
var array = target.ToArray();
}
First 5/6 indexes will tell you the file type. In case of FLV its 70, 76, ...
How to get english language word database? [closed]
...
I have not personally downloaded it, but it was there ready when I started coding. So I don't know what files will be there in which download. I just know that you can download in different formats. If you can tell me in which format you want, I may be able to help.
...
What is a None value?
I have been studying Python, and I read a chapter which describes the None value, but unfortunately this book isn't very clear at some points. I thought that I would find the answer to my question, if I share it there.
...