大约有 37,000 项符合查询结果（耗时：0.0402秒） [XML]
Passing Data between View Controllers
...igationController pushViewController:vc animated:NO];
fire block
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:
(NSIndexPath *)indexPath {
NSString *voucher = vouchersArray[indexPath.row];
if (sourceVC.selectVoucherBlock) {
sourceVC.selectVoucherBlock(voucher)...
Simple state machine example in C#?
...n the current state and command, or looking up transitions in a transition table. For this simple state machine, I prefer a transition table, which is very easy to represent using a Dictionary:
using System;
using System.Collections.Generic;
namespace Juliet
{
public enum ProcessState
{
...
What is the advantage of using heredoc in PHP? [closed]
...se them to construct SQL queries:
$sql = <<<SQL
select *
from $tablename
where id in [$order_ids_list]
and product_name = "widgets"
SQL;
To me this has a lower probability of introducing a syntax error than using quotes:
$sql = "
select *
from $tablename
where id in [$order_ids...
What's the difference between ConcurrentHashMap and Collections.synchronizedMap(Map)?
...══════╗
║ Property ║ HashMap ║ Hashtable ║ ConcurrentHashMap ║
╠═══════════════╬═══════════════════╬═══════════════════╩═════...
Wrap a delegate in an IEqualityComparer
...ll of these rely on hash codes to work properly, because they utilize hash tables internally for efficiency.
Take Distinct, for example. Consider the implications of this extension method if all it utilized were an Equals method. How do you determine whether an item's already been scanned in a sequ...
Sanitizing strings to make them URL and filename safe?
...d". The definition of letters and digits is controlled by PCRE's character tables, and may vary if locale-specific matching is taking place. For example, in the "fr" (French) locale, some character codes greater than 128 are used for accented letters, and these are matched by \w.
Creating the s...
Explain the use of a bit vector for determining if all characters are unique
...of both operands to left and right of it.
So what we have here is a hash table which is being stored in a 32 bit binary number every time the checker gets or'd ( checker |= (1 << val)) with the designated binary value of a letter its corresponding bit it is being set to true.
The character's...
How to use underscore.js as a template engine?
...eate your template -->
<script type="foo/bar" id='usageList'>
<table cellspacing='0' cellpadding='0' border='1' >
<thead>
<tr>
<th>Id</th>
<th>Name</th>
</tr>
</thead>
<tbody>
<%
...
What's with 181783497276652981 and 8682522807148012 in Random (Java 7)?
...o Java?
Yes, seems to be a typo.
Does 181783497276652981 have an acceptable merit?
This could be determined using the evaluation algorithm presented in the paper. But the merit of the "original" number is probably higher.
And why was 8682522807148012 chosen?
Seems to be random. It could ...
How to concatenate strings of a string field in a PostgreSQL 'group by' query?
...e the strings of a field within a group by query. So for example, I have a table:
14 Answers
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