大约有 14,600 项符合查询结果（耗时：0.0500秒） [XML]
How do I create a parameterized SQL query? Why Should I?
...
Here's a short class to start with SQL and you can build from there and add to the class.
MySQL
Public Class mysql
'Connection string for mysql
Public SQLSource As String = "Server=123.456.789.123;userid=someuser;password=somesecurepasswo...
How to turn on front flash light programmatically in Android?
...();
p.setFlashMode(Parameters.FLASH_MODE_TORCH);
cam.setParameters(p);
cam.startPreview();
Code snippet to turn off camera led light.
cam.stopPreview();
cam.release();
I just found a project that uses this permission. Check quick-settings' src code. here http://code.google.com/p/quick-sett...
What is a plain English explanation of “Big O” notation?
...t would you do? Ignoring the fact that you could guess how far in the S's started (let's assume you can't), what would you do?
A typical implementation might be to open up to the middle, take the 500,000th and compare it to "Smith". If it happens to be "Smith, John", we just got really lucky. Far ...
PHP foreach change original array values
...don't pass by reference" or "passing by reference is evil". Less likely to start a flame war. :)
– Sean the Bean
Oct 3 '17 at 20:24
|
show 5...
Which is better, number(x) or parseFloat(x)?
...have standard numeric input, there's no difference. However, if your input starts with a number and then contains other characters, parseFloat truncates the number out of the string, while Number gives NaN (not a number):
parseFloat('1x'); // => 1
Number('1x'); // => NaN
In addition, Number...
Use email address as primary key?
...t e-mail, making it pretty damn hard to change ...
... and I haven't even started talking about performance considerations.
share
|
improve this answer
|
follow
...
REST API - why use PUT DELETE POST GET?
...P that you can take advantage of if you're using a truly restful API. I'd start with authentication.
share
|
improve this answer
|
follow
|
...
__FILE__, __LINE__, and __FUNCTION__ usage in C++
...inal source files. For example:
#line 100
Will make the following lines start with __LINE__ 100. You can optionally add a new file-name
#line 100 "file.c"
It's only rarely useful. But if it is needed, there are no alternatives I know of. Actually, instead of the line, a macro can be used too w...
Wait for all promises to resolve
...ctions are complete. There will likely be multiple $q.alls, however once I start the resolution process, no new actions/promises will be chained.
– jensengar
Feb 13 '14 at 19:18
...
Django - what is the difference between render(), render_to_response() and direct_to_template()?
... the Django noob (i.e. me) - almost certainly a simplification, but a good starting point?
render_to_response() is the "original", but requires you putting context_instance=RequestContext(request) in nearly all the time, a PITA.
direct_to_template() is designed to be used just in urls.py without a...