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Select n random rows from SQL Server table
...s plus the join cost, which on a large table with a small percentage selection should be reasonable.
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How to navigate through textfields (Next / Done Buttons)
...focus next. This is what makes tabbing between text fields work. But since iOS devices do not have a keyboard, only touch, this concept has not survived the transition to Cocoa Touch.
This can be easily done anyway, with two assumptions:
All "tabbable" UITextFields are on the same parent view.
Th...
How to calculate the SVG Path for an arc (of a circle)
...um's great answer, here's a method for generating an arced path:
function polarToCartesian(centerX, centerY, radius, angleInDegrees) {
var angleInRadians = (angleInDegrees-90) * Math.PI / 180.0;
return {
x: centerX + (radius * Math.cos(angleInRadians)),
y: centerY + (radius * Math....
How to write binary data to stdout in python 3?
...
An idiomatic way of doing so, which is only available for Python 3, is:
with os.fdopen(sys.stdout.fileno(), "wb", closefd=False) as stdout:
stdout.write(b"my bytes object")
stdout.flush()
The good part is that it uses t...
Get Slightly Lighter and Darker Color from UIColor
... Also, from @Riley's idea, it may be a better idea to make the color proprtionally darker or lighter instead of adding or subtracting constant values. As @jrturton pointed out, it's not necessary to manipulate the RGB components; it's better to modify the brightness property itself. All in all:
@im...
How to write a JSON file in C#?
...onConvert.SerializeObject(_data.ToArray());
//write string to file
System.IO.File.WriteAllText(@"D:\path.txt", json);
Or the slightly more efficient version of the above code (doesn't use a string as a buffer):
//open file stream
using (StreamWriter file = File.CreateText(@"D:\path.txt"))
{
...
How to get HTTP Response Code using Selenium WebDriver
....util.Iterator;
import java.util.logging.Level;
import org.json.JSONException;
import org.json.JSONObject;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.logging.LogEntries;
import org.openqa.selenium.logging.LogEntry;
imp...
Case preserving substitute in Vim
... Subvert command will switch to mixed-case mode and will do all the substitions as given by OP.
– shivams
Apr 26 at 22:53
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Is there a way to auto-adjust Excel column widths with pandas.ExcelWriter?
...cause I just ran into the same issue and found that the official documentation for Xlsxwriter and pandas still have this functionality listed as unsupported. I hacked together a solution that solved the issue i was having. I basically just iterate through each column and use worksheet.set_column to ...
Android: How to stretch an image to the screen width while maintaining aspect ratio?
...he screen horizontally, and stretches vertically to maintain the aspect ratio of the image, on any screen size. Here is my (non-working) code. It stretches the image horizontally, but not vertically, so it is squashed...
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