大约有 32,000 项符合查询结果（耗时：0.0506秒） [XML]
Custom numeric format string to always display the sign
...
Fixed a bug whereby negatives did not get a minus.
– Roman Starkov
Oct 25 '11 at 16:10
...
PostgreSQL naming conventions
... case, etc, the prevalent convention is:
SQL keywords: UPPER CASE
names (identifiers): lower_case_with_underscores
For example:
UPDATE my_table SET name = 5;
This is not written in stone, but the bit about identifiers in lower case is highly recommended, IMO. Postgresql treats identifiers cas...
How do I script a “yes” response for installing programs?
...t the CPU. stackoverflow.com/a/18164007/720665
– David Salamon
Aug 2 '16 at 9:44
Nice. This just made my life substan...
How do I setup a SSL certificate for an express.js server?
...tline how to obtain the .pem files? I have two .crt files from my cert provider.
– SCBuergel.eth
Aug 10 '16 at 9:52
|
show 3 more comments
...
How to create a colored 1x1 UIImage on the iPhone dynamically?
...mage {
let rect = CGRect(origin: CGPoint(x: 0, y:0), size: CGSize(width: 1, height: 1))
UIGraphicsBeginImageContext(rect.size)
let context = UIGraphicsGetCurrentContext()!
context.setFillColor(color.cgColor)
context.fill(rect)
let image = UIGraphicsG...
Formatting a number with leading zeros in PHP [duplicate]
.... If it refers to the output you would have to have an additional substr() call to clip the string.
To clip the first 8 digits
$p = substr(sprintf('%08d', $p),0,8);
To clip the last 8 digits
$p = substr(sprintf('%08d', $p),-8,8);
...
Does MySQL included with MAMP not include a config file?
...
+1 for the max_allowed_packet. How did you know exactly what I was looking for?
– iGbanam
Sep 29 '14 at 11:27
3
...
Copying text to the clipboard using Java
...
In which context did you test this? From a GUI application? On which platform? Does it work setting the clipboard 100 times in a row (with some appropriate pause between each set)?
– Peter Mortensen
Feb 9...
Why does substring slicing with index out of range work?
...xample'[3:4] and 'example'[3] are fundamentally different, and slicing outside the bounds of a sequence (at least for built-ins) doesn't cause an error.
It might be surprising at first, but it makes sense when you think about it. Indexing returns a single item, but slicing returns a subsequence of...
Creating C macro with ## and __LINE__ (token concatenation with positioning macro)
... x ## y
#define TOKENPASTE2(x, y) TOKENPASTE(x, y)
#define UNIQUE static void TOKENPASTE2(Unique_, __LINE__)(void) {}
Then, __LINE__ gets expanded to the line number during the expansion of UNIQUE (since it's not involved with either # or ##), and then the token pasting happens during the expansio...