大约有 37,000 项符合查询结果（耗时：0.0333秒） [XML]
orderBy multiple fields in Angular
...lmon', fish: 'Misc', tastiness: 2 }
];
});
</script>
<table style="border: 2px solid #000;">
<thead>
<tr>
<td><a href="#" ng-click="addSort('name');sortReverse1=!sortReverse1">NAME<span ng-show="sortReverse1==false">&#9660;</sp...
Is R's apply family more than syntactic sugar?
... This is a little off topic, but for this specific example, data.table is even faster and I think "easier". library(data.table) dt<-data.table(X,Y,Z,key=c("Y,Z")) system.time(dt[,list(X_mean=mean(X)),by=c("Y,Z")])
– dnlbrky
Feb 22 '13 at 4:01
...
Is it possible to make an HTML anchor tag not clickable/linkable using CSS?
...e key in this solution is: pointer-events. Here the link for compatibility-table
– masegaloeh
Sep 2 '14 at 8:09
@JohnM...
.NET HashTable Vs Dictionary - Can the Dictionary be as fast?
I am trying to figure out when and why to use a Dictionary or a HashTable. I have done a bit of a search on here and have found people talking about the generic advantages of the Dictionary which I totally agree with, which leads the boxing and unboxing advantage for a slight performance gain.
...
When does a process get SIGABRT (signal 6)?
...sses inside pointer to itself.
the A ctor calls pure virtual method before table was filled with valid pointer,
because d is not constructed yet.
#include<iostream>
using namespace std;
class A {
public:
A(A *pa){pa->f();}
virtual void f()=0;
};
class D : public A {
public:
D():A(this)...
How to “properly” print a list?
...ed characters from a string using its translate() method with None for the table argument followed by a string containing the character(s) you want removed for its deletechars argument.
lst = ['x', 3, 'b']
print str(lst).translate(None, "'")
# [x, 3, b]
If you're using a version of Python befor...
What is data oriented design?
...gner will also likely split out infrequently accessed data into a separate table rather than creating a table with huge number of columns were only a few of the columns are ever used. He might also choose to denormalize some of the tables so that data don't have to be accessed from multiple location...
IOS7 : UIScrollView offset in UINavigationController
...omaticallyAdjustsScrollViewInsets is deprecated
You should now use:
self.tableView.contentInsetAdjustmentBehavior = .never
I also encourage you to check this question and its answer to get a better understanding of those properties
...
Convert text into number in MySQL query
... field,CONVERT(SUBSTRING_INDEX(field,'-',-1),UNSIGNED INTEGER) AS num
FROM table
ORDER BY num;
share
|
improve this answer
|
follow
|
...
How to round an average to 2 decimal places in PostgreSQL?
...old syntax for casting,
SELECT ROUND(AVG(some_column)::numeric,2)
FROM table;
works with any version of PostgreSQL.
There are a lack of overloads in some PostgreSQL functions, why (???): I think "it is a lack" (!), but @CraigRinger, @Catcall and the PostgreSQL team agree about "pg's historic r...