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Select last row in MySQL
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Make it simply use: PDO::lastInsertId
http://php.net/manual/en/pdo.lastinsertid.php
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Convert ArrayList to String[] array [duplicate]
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According to Joshua Bloch in Effective Java, preallocating the array harms performance. Provide a zero-length array instead. stockList.toArray(new String[0])
– Crashh
Mar 10 '18 at 3:20
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How to take screenshot of a div with JavaScript?
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If you wish to have "Save as" dialog, just pass image into php script, which adds appropriate headers
Example "all-in-one" script script.php
<?php if(isset($_GET['image'])):
$image = $_GET['image'];
if(preg_match('#^data:image/(.*);base64,(.*)$#s', $image, $match)){
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Virtual functions and performance - C++
...s 1st level cache with more memory than my first computer had? Not at all. Allocating memory from main RAM will cost you more time than if all your functions were virtual.
Its like the old, old days where people said structured programming was slow because all the code was split into functions, eac...
How to construct a REST API that takes an array of id's for the resources
...ry parameters will be combined into an array. With the above query string, PHP happens to tell you that id equals [1, 2, 3], but Ruby on Rails tells you it equals 3, and other frameworks may also act differently, e.g. saying id equals 1. URLs like …?id=1,2,3 avoid this potential for confusion.
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How many parameters are too many? [closed]
...umber of CPU registers, because anymore and the compiler will be forced to allocate them on the stack.
– Michaelangel007
Mar 31 '16 at 14:10
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C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
...Segment fault 之永远的痛》(http://www.linuxforum.net/forum/gshowflat.php?Cat=&Board=program&Number=193239&page=2&view=collapsed&sb=5&o=all&fpart=1&vc=1)
在主题帖子里头，作者这么写道：
写程序好多年了，Segment fault 是许多C程序员头疼的提示。指针...
Placeholder in UITextView
...at const UI_PLACEHOLDER_TEXT_CHANGED_ANIMATION_DURATION = 0.25;
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
#if __has_feature(objc_arc)
#else
[_placeHolderLabel release]; _placeHolderLabel = nil;
[_placeholderColor release]; _placeholderColor = nil;
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Read stream twice
... = new ByteArrayOutputStream(); // as ByteArrayOutputStream to dynamically allocate internal bytes array instead of allocating possibly large buffer (if maxBytesToRead is large)
// NOTE: below reading byte by byte instead of "int bytesRead = is.read(firstBytes, 0, maxBytesOfResponseToLog);"
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iOS 7 TextKit - How to insert images inline with text?
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NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:@"like after"];
NSTextAttachment *textAttachment = [[NSTextAttachment alloc] init];
textAttachment.image = [UIImage imageNamed:@"whatever.png"];
NSAttributedString *attrStringWithImage = [NSAttributedS...