大约有 44,000 项符合查询结果（耗时：0.0605秒） [XML]
MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update
as the title says, I want to perform a find (one) for a document, by _id, and if doesn't exist, have it created, then whether it was found or was created, have it returned in the callback.
...
Get $_POST from multiple checkboxes
I have 1 form in with multiple checkboxes in it (each with the code):
6 Answers
6
...
How do you remove a specific revision in the git history?
...
To combine revision 3 and 4 into a single revision, you can use git rebase. If you want to remove the changes in revision 3, you need to use the edit command in the interactive rebase mode. If you want to combine the changes into a ...
Postgres: INSERT if does not exist already
I'm using Python to write to a postgres database:
17 Answers
17
...
Git command to display HEAD commit id?
What command can I use to print out the commit id of HEAD?
9 Answers
9
...
WebAPI Delete not working - 405 Method Not Allowed
... the solution eventually!
If you come across the same issue, add the following to your web.config
<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<modules runAllManagedModulesForAllRequests="true">
<remove name="WebDAVModule"/> &l...
CSS: fixed position on x-axis but not y?
...
Its a simple technique using the script also. You can check a demo here too.
JQuery
$(window).scroll(function(){
$('#header').css({
'left': $(this).scrollLeft() + 15
//Why this 15, because in the CSS, we have set left 15, so a...
Android: combining text & image on a Button or ImageButton
I'm trying to have an image (as the background) on a button and add dynamically, depending on what's happening during run-time, some text above/over the image.
...
Adding options to select with javascript
I want this javascript to create options from 12 to 100 in a select with id="mainSelect", because I do not want to create all of the option tags manually. Can you give me some pointers? Thanks
...
Primary key or Unique index?
At work we have a big database with unique indexes instead of primary keys and all works fine.
15 Answers
...