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Get a substring of a char* [duplicate]
...now the position and the length of the substring:
char *buff = "this is a test string";
printf("%.*s", 4, buff + 10);
You could achieve the same thing by copying the substring to another memory destination, but it's not reasonable since you already have it in memory.
This is a good example of av...
Can I have multiple primary keys in a single table?
...y one auto column and it must be defined as a key".
DROP TABLE IF EXISTS `test`.`animals`;
CREATE TABLE `test`.`animals` (
`grp` char(30) NOT NULL,
`id` mediumint(9) NOT NULL AUTO_INCREMENT,
`name` char(30) NOT NULL,
PRIMARY KEY (`grp`,`id`)
) ENGINE=MyISAM;
INSERT INTO animals (grp,name)...
What's the difference between equal?, eql?, ===, and ==?
... true if obj and other refer to the same hash key. This is used by Hash to test members for equality. For objects of class Object, eql? is synonymous with ==. Subclasses normally continue this tradition by aliasing eql? to their overridden == method, but there are exceptions. Numeric types, for exam...
Get nodes where child node contains an attribute
...conformance issue
Below is the code
import com.ximpleware.*;
public class test1 {
public static void main(String[] s) throws Exception{
VTDGen vg = new VTDGen();
if (vg.parseFile("c:/books.xml", true)){
VTDNav vn = vg.getNav();
AutoPilot ap = new AutoPilot(vn);
...
How do you overcome the HTML form nesting limitation?
...tatement, you will be able to view the support for this feature here: html5test.com/compare/feature/form-association-form.html. IE is a write-off, most other desktop browsers seem tolerable.
– fatty
Dec 22 '13 at 3:57
...
Pretty-print a Map in Java
...ring, Map<String,double[]>>, then you'll get this type of sting: [test={test=[D@3995ebd8, 2=[D@26fa5067, 3=[D@1d956d37, 4=[D@2cead81, 5=[D@14934d2b}...]
– zygimantus
Jan 16 '16 at 13:23
...
Why is document.body null in my javascript?
...g (as mentioned by e-bacho 2.0).
<head>
<title>Javascript Tests</title>
<script type="text/javascript">
window.onload = function() {
var mySpan = document.createElement("span");
mySpan.innerHTML = "This is my span!";
mySpan.style.color...
Mozilla PDF.js：PDF在线预览 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...复制缺少的 API和API功能的行为。
09.pdf
test pdf
测试用的pdf文件
debugger.js
helpful pdf debugging features
images/
images for the viewer and annotation icons
viewer界面的图标
l10n.js
lo...
Why is null an object and what's the difference between null and undefined?
...undefined, null
Booleans: false
Numbers: +0, -0, NaN
Strings: ""
You can test the conversion to boolean by using Boolean as a function (normally it is a constructor, to be used with new):
> Boolean(null)
false
> Boolean("")
false
> Boolean(3-3)
false
> Boolean({})
true
> Boolean([]...
Get/pick an image from Android's built-in Gallery app programmatically
... works with OI file manager, astro file manager AND the media gallery too (tested). so i guess it will work with every file manager (are there many others than those mentioned?). did some corrections to the code he wrote.
public class BrowsePicture extends Activity {
//YOU CAN EDIT THIS TO ...