大约有 31,100 项符合查询结果(耗时:0.0559秒) [XML]
What is the maximum length of a table name in Oracle?
...y this for yourself:
SQL> create table I23456789012345678901234567890 (my_id number);
Table created.
SQL> create table I234567890123456789012345678901(my_id number);
ERROR at line 1:
ORA-00972: identifier is too long
Updated: as stated above, in Oracle 12.2 and later, the maximum obj...
Auto increment in phpmyadmin
I have an existing database using PHP, MySQL and phpMyAdmin.
9 Answers
9
...
Check if a path represents a file or a folder
...
As I mentioned in my question, I have only Strings and no File instances, and I can't create them.
– Egor
Oct 8 '12 at 11:08
...
Get protocol + host name from URL
In my Django app, I need to get the host name from the referrer in request.META.get('HTTP_REFERER') along with its protocol so that from URLs like:
...
Use C++ with Cocoa Instead of Objective-C?
...ersely, you can call C++ functions from within ObjC code like:
@interface MyClass {
MyCPPClass *cppInstance;
}
@end
@implementation MyClass
- (id)init {
if(self = [super init]) {
cppInstance = new MyCPPClass();
}
return self;
}
- (void) dealloc {
if(cppInstance != NULL)...
How to have an auto incrementing version number (Visual Studio)? [duplicate]
...
Worked nicely for my needs, using bzr revno to populate part of the version info
– CoderTao
Dec 10 '12 at 1:27
11
...
C++ valarray vs. vector
... performance benefit when using std::valarray for simple math, but not for my implementations to calculate standard deviation (and, of course, standard deviation isn't that complex, as far as math goes). I suspect that operations on each item in a large std::vector play better with caches than oper...
Open Redis port for remote connections
...
1- Comment out bind 127.0.0.1
2- Change protected-mode to no
3- Protect my server with iptables (https://www.digitalocean.com/community/tutorials/how-to-implement-a-basic-firewall-template-with-iptables-on-ubuntu-14-04)
s...
How to remove “onclick” with JQuery?
...erty
Suppose you added your click event inline, like this :
<button id="myButton" onclick="alert('test')">Married</button>
Then, you can remove the event like this :
$("#myButton").prop('onclick', null); // Removes 'onclick' property if found
Removing click event listeners
Suppose you...
How to beautify JSON in Python?
...
Try underscore-cli:
cat myfile.json | underscore print --color
It's a pretty nifty tool that can elegantly do a lot of manipulation of structured data, execute js snippets, fill templates, etc. It's ridiculously well documented, polished, and r...
