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Why is the Windows cmd.exe limited to 80 characters wide?
...right, T is interactive mode)
MODE CON[:] [NUMLOCK|CAPSLOCK|SCROLLLOCK|SWITCHAR]=value
Value can be: + or - for the locks or a character for switchar.
MODE CON[:] [COLS=...] [LINES=...] (possible values depend on your hardware)
MODE CON[:] [RATE=...] [DELAY=...] (default rate 20, default de...
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign
...d with the same primary key.
a mismatch in column definition (e.g. size of char fields) between the database and the dataset
Try running your query natively and look at the results, if the resultset is not too large. If you've eliminated null values, then my guess is that the primary key columns i...
How can I save application settings in a Windows Forms application?
...ings.Default.SomeProperty = 'value'; Settings.Default.Save(); works like a charm. Or is that because I've got User-settings?
– doekman
Jan 16 '12 at 10:34
4
...
Properly escape a double quote in CSV
... Why was this answer ever voted up? The comment about escaping characters was never backed up and the original question doesn't ask about PHP. This only seems to be true for the string delimiter (and only for the chosen delimiter) when a program, such as Open Office, allows you to change...
round() for float in C++
...pdf)
#include <cmath>
#include <iostream>
int main(int argc, char** argv) {
std::cout << "round(0.5):\t" << round(0.5) << std::endl;
std::cout << "round(-0.5):\t" << round(-0.5) << std::endl;
std::cout << "round(1.4):\t" << round(1....
In .NET, which loop runs faster, 'for' or 'foreach'?
...Yup - I almost always prefer List<T> over arrays. The exceptions are char[] and byte[] which are more often treated as "chunks" of data rather than normal collections.
– Jon Skeet
May 27 '10 at 16:38
...
Is it safe to use -1 to set all bits to true?
... on datasets of N bits by breaking it down into chunks of sizeof(unsigned)*CHAR_BIT bits each.
– MSalters
May 4 '09 at 7:22
2
...
How do I test which class an object is in Objective-C?
...objective-c runtime api:
#import <objc/runtime.h>
/* ... */
const char* className = class_getName([yourObject class]);
NSLog(@"yourObject is a: %s", className);
EDIT: In Swift
if touch.view is UIPickerView {
// touch.view is of type UIPickerView
}
...
PostgreSQL Crosstab Query
...ase, I believe it would look something like this:
CREATE TABLE t (Section CHAR(1), Status VARCHAR(10), Count integer);
INSERT INTO t VALUES ('A', 'Active', 1);
INSERT INTO t VALUES ('A', 'Inactive', 2);
INSERT INTO t VALUES ('B', 'Active', 4);
INSERT INTO t VALUES ('B', 'Inactive', 5);
SELECT...
Why is \r a newline for Vim?
From question How to replace a character for a newline in Vim? . You have to use \r when replacing text for a newline, like this
...