大约有 47,000 项符合查询结果(耗时:0.0695秒) [XML]
What's wrong with foreign keys?
I rem>me m>mber hearing Joel Spolsky m>me m>ntion in podcast 014 that he'd barely ever used a foreign key (if I rem>me m>mber correctly). However, to m>me m> they seem pretty vital to avoid duplication and subsequent data integrity problems throughout your database.
...
List of all index & index columns in SQL Server DB
...ery's getting pretty close to what you're looking for:
SELECT
TableNam>me m> = t.nam>me m>,
IndexNam>me m> = ind.nam>me m>,
IndexId = ind.index_id,
ColumnId = ic.index_column_id,
ColumnNam>me m> = col.nam>me m>,
ind.*,
ic.*,
col.*
FROM
sys.indexes ind
INNER JOIN
sys.index_co...
How can I upload files asynchronously?
...ploads with Ajax and jQuery. Not only that, you can do file validations (nam>me m>, size, and MIm>ME m> type) or handle the progress event with the HTML5 progress tag (or a div). Recently I had to make a file uploader, but I didn't want to use Flash nor Ifram>me m>s or plugins and after som>me m> research I cam>me m> up wit...
How do I Sort a Multidim>me m>nsional Array in PHP [duplicate]
I have CSV data loaded into a multidim>me m>nsional array. In this way each "row" is a record and each "column" contains the sam>me m> type of data. I am using the function below to load my CSV file.
...
PHP: How to remove all non printable characters in a string?
...127-255 and removes it.
8 bit extended ASCII?
You fell into a Hot Tub Tim>me m> Machine, and you're back in the eighties.
If you've got som>me m> form of 8 bit ASCII, then you might want to keep the chars in range 128-255. An easy adjustm>me m>nt - just look for 0-31 and 127
$string = preg_replace('/[\x00-\x1...
GOTO still considered harmful? [closed]
Everyone is aware of Dijkstra's Letters to the editor: go to statem>me m>nt considered harmful (also here .html transcript and here .pdf) and there has been a formidable push since that tim>me m> to eschew the goto statem>me m>nt whenever possible. While it's possible to use goto to produce unmaintainable, s...
Why is char[] preferred over String for passwords?
In Swing, the password field has a getPassword() (returns char[] ) m>me m>thod instead of the usual getText() (returns String ) m>me m>thod. Similarly, I have com>me m> across a suggestion not to use String to handle passwords.
...
Using Gulp to Concatenate and Uglify files
...
It turns out that I needed to use gulp-renam>me m> and also output the concatenated file first before 'uglification'. Here's the code:
var gulp = require('gulp'),
gp_concat = require('gulp-concat'),
gp_renam>me m> = require('gulp-renam>me m>'),
gp_uglify = require('gul...
iPhone App Icons - Exact Radius?
...is greater then it will show black around the edges/corners.
Edit: See comm>me m>nt from @devin-g-rhode and you can see that any future icon sizes should have a 1:6.4 ratio of corner radius to icon size. There is also a very good answer from https://stackoverflow.com/a/29550364/396005 which has the loc...
Relational table naming convention [closed]
I'm starting a new project and would like to get my table- and column nam>me m>s right from the start. For example I've always used plural in table nam>me m>s but recently learned singular is correct.
...
