大约有 23,000 项符合查询结果（耗时：0.0309秒） [XML]
Is storing a delimited list in a database column really that bad?
...t fetching the whole list.
Can't store a list longer than what fits in the string column.
Hard to search for all entities with a given value in the list; you have to use an inefficient table-scan. May have to resort to regular expressions, for example in MySQL:
idlist REGEXP '[[:<:]]2[[:>:]]'*...
What does java:comp/env/ do?
...ctFactoryBean that is, when set to true, used to automatically prepend the string java:comp/env/ if it is not already present.
<bean id="someId" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="jdbc/loc"/>
<property name="resourceRef" value...
pass **kwargs argument to another function with **kwargs
...
# this yields the same error as any other positional argument
foo(3)
foo("string")
Here you can see how unpacking a dictionary works, and why sending an actual dictionary fails
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improve t...
How to keep/exclude a particular package path when using proguard?
...ak your code. You can see the mapping in the mapping print out:
java.lang.String toString() -> toString
int getMemoizedSerializedSize() -> getMemoizedSerializedSize
void setMemoizedSerializedSize(int) -> setMemoizedSerializedSize
int getSerializedSize() -> getSerializedSize
boolean equa...
Possible to iterate backwards through a foreach?
...nce could be infinite, for example:
public static IEnumerable<T> GetStringsOfIncreasingSize()
{
string ret = "";
while (true)
{
yield return ret;
ret = ret + "x";
}
}
What would you expect to happen if you tried to iterate over that in reverse?
...
Utility classes are evil? [closed]
...web services in json format.
In theory you can manually convert objects to strings which will be in json, but that would reinvent the wheel. Correct solution would be to include in both modules external library used to convert java objects to desired format. (in example image I have shown gson)
...
Facebook API - How do I get a Facebook user's profile image through the Facebook API (without requir
...ough that page further, another useful thing might be the ?type=large querystring you can add on. Props for coming up with a totally much better answer than the screen-scraping I was typing up, BTW :).
– Domenic
May 12 '10 at 17:21
...
Razor doesn't understand unclosed html tags
... public static class MyRenderHelpers
{
public static MvcHtmlString Html(this HtmlHelper helper, string html, bool condition)
{
if (condition)
return MvcHtmlString.Create(html);
else
return MvcHtmlString.Empty;
}
...
ViewParam vs @ManagedProperty(value = “#{param.id}”)
...n. Even a <h:message> can be attached.
Can be included as GET query string using includeViewParams attribute of <h:link> or includeViewParams=true request parameter in any URL.
Can be used on a @RequestScoped bean, but it requires the bean to be @ViewScoped if you want the view paramet...
Does the order of LINQ functions matter?
...ive version of LINQ to do the following:
public class Record
{
public string Name { get; set; }
public double Score1 { get; set; }
public double Score2 { get; set; }
}
var query = from record in Records
order by ((record.Score1 + record.Score2) / 2) descending
...