大约有 46,000 项符合查询结果（耗时：0.0540秒） [XML]
Zero-pad digits in string
... data type. You presumably want to pad your digits with leading zeros in a string. The following code does that:
$s = sprintf('%02d', $digit);
For more information, refer to the documentation of sprintf.
share
|
...
Custom toast on Android: a simple example
...e Java method (just pass toast message to this method):
public void toast(String message)
{
Toast toast = new Toast(context);
View view = LayoutInflater.from(context).inflate(R.layout.image_custom, null);
TextView textView = (TextView) view.findViewById(R.id.custom_toast_text);
text...
sql “LIKE” equivalent in django query
..._contains or __icontains (case-insensitive):
result = table.objects.filter(string__contains='pattern')
The SQL equivalent is
SELECT ... WHERE string LIKE '%pattern%';
share
|
improve this answer
...
Oracle query to fetch column names
...ific user. in your case, I'd imagine the query would look something like:
String sqlStr= "
SELECT column_name
FROM all_tab_cols
WHERE table_name = 'USERS'
AND owner = '" +_db+ "'
AND column_name NOT IN ( 'PASSWORD', 'VERSION', 'ID' )"
Note that with this approach, you risk SQL injection....
Difference between EXISTS and IN in SQL?
...turns purely Boolean values, which is always faster than having to compare strings or values larger than a BIT/Boolean type. IN may or may not be a Boolean comparison. Since programming prefers EXPLICIT usage for stability (part of ACID), EXISTS is preferred generally.
– clift...
How to get datetime in JavaScript?
...emantically, you're probably looking for the one-liner
new Date().toLocaleString()
which formats the date in the locale of the user.
If you're really looking for a specific way to format dates, I recommend the moment.js library.
...
How to get active user's UserDetails
...Authentication doesn't strictly have to contain a UserDetails. It can be a string or any other type.
If you don't want to call SecurityContextHolder directly, the most elegant approach (which I would follow) is to inject your own custom security context accessor interface which is customized to mat...
Determine which JAR file a class is from
...ed by bootstrap classloader. The other way to determine is:
Class klass = String.class;
URL location = klass.getResource('/' + klass.getName().replace('.', '/') + ".class");
As notnoop pointed out klass.getResource() method returns the location of the class file itself. For example:
jar:file:/j...
Date only from TextBoxFor()
...Name("Start Date")]
[DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:yyyy-MM-dd}")]
public DateTime StartDate { get; set; }
Then:
<%=Html.EditorFor(m => m.StartDate) %>
share
|
...
Using querySelectorAll to retrieve direct children
...support one code path that really just wants to take an arbitrary selector string as input and a list of matches as output! But if like me you ended up asking this question simply because you got stuck thinking "all you had was a hammer" don't forget there are a variety of other tools the DOM offers...