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Purpose of Unions in C and C++
...he union is actually used:
struct VAROBJECT
{
enum o_t { Int, Double, String } objectType;
union
{
int intValue;
double dblValue;
char *strValue;
} value;
} object;
share
|...
Why is null an object and what's the difference between null and undefined?
...avaScript: Boolean false.
name = '';
You: What is name?
JavaScript: Empty string
*: name in this context is meant as a variable which has never been defined. It could be any undefined variable, however, name is a property of just about any HTML form element. It goes way, way back and was institute...
Base64 encoding and decoding in client-side Javascript
... there any methods in JavaScript that could be used to encode and decode a string using base64 encoding?
13 Answers
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Declaration/definition of variables locations in ObjectiveC?
...In ObjC, they should only be used to declare constants, and generally only string constants. For instance:
extern NSString * const MYSomethingHappenedNotification;
You would then in your .m file declare the actual constant:
NSString * const MYSomethingHappenedNotification = @"MYSomethingHappened...
What is the difference between LR, SLR, and LALR parsers?
...
Suppose a parser without a lookahead is happily parsing strings for your grammar.
Using your given example it comes across a string dc, what does it do? Does it reduce it to S, because dc is a valid string produced by this grammar? OR maybe we were trying to parse bdc because eve...
How to get HTTP Response Code using Selenium WebDriver
...Capabilities;
public class TestResponseCode
{
public static void main(String[] args)
{
// simple page (without many resources so that the output is
// easy to understand
String url = "http://www.york.ac.uk/teaching/cws/wws/webpage1.html";
DownloadPage(url);
...
Detecting which UIButton was pressed in a UITableView
...)metaData:(id)target
Enjoy
#import <objc/runtime.h>
static char const * const kMetaDic = "kMetaDic";
#pragma mark - Getters / Setters
- (id)metaData:(id)target {
return objc_getAssociatedObject(target, kMetaDic);
}
- (void)setMetaData:(id)target withObject:(id)newObj {
...
Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.
...olute/path/to/file.rb, what happens is that expand_path will construct the string /absolute/path/to/file.rb/../relative/path, and then apply a rule that says that .. should remove the path component before it (file.rb in this case), returning /absolute/path/to/relative/path.
Is this best practice? ...
How to get error message when ifstream open fails
How to get error message as string?
4 Answers
4
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Getting raw SQL query string from PDO prepared statements
Is there a way to get the raw SQL string executed when calling PDOStatement::execute() on a prepared statement? For debugging purposes this would be extremely useful.
...