大约有 7,000 项符合查询结果（耗时：0.0182秒） [XML]
Using a bitmask in C#
...
if ( ( param & karen ) == karen )
{
// Do stuff
}
The bitwise 'and' will mask out everything except the bit that "represents" Karen. As long as each person is represented by a single bit position, you could check multiple pe...
Get notified when UITableView has finished asking for data?
... to be working anymore, due to some changes made to UITableView implementation since the answer was written. See this comment : Get notified when UITableView has finished asking for data?
I've been playing with this problem for a couple of days and think that subclassing UITableView's reloadData is...
How can I convert an RGB image into grayscale in Python?
...A')? why not .convert('gray')? Seems needlessly cryptic. The PIL documentation doesn't mention anything about 'LA' for the convert function.
– waspinator
Aug 31 '12 at 1:32
...
How to set request headers in rspec request spec?
...
New RSspec 3 syntax would be like get my_resource_path, params: {}, headers: { 'HTTP_ACCEPT' => "application/json" } `
– Cyril Duchon-Doris
Jun 8 '17 at 20:24
...
UITableView - change section header color
How can I change color of a section header in UITableView?
31 Answers
31
...
iOS: How to store username/password within an app?
I have a login-screen in my iOS app.
The username and password will be saved in the NSUserDefaults and be loaded into the login-screen again when you enter the app again (of course, NSUserDefaults are permanent).
...
How do you add multi-line text to a UIButton?
...
For iOS 6 and above, use the following to allow multiple lines:
button.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
// you probably want to center it
button.titleLabel.textAlignment = NSTextAlignmentCenter; // if you wa...
How to add a button dynamically in Android?
...);
LinearLayout ll = (LinearLayout)findViewById(R.id.buttonlayout);
LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
ll.addView(myButton, lp);
Have a look to this example
share
...
How to add double quotes to a string that is inside a variable?
.../ Put a string between double quotes.
/// </summary>
/// <param name="value">Value to be put between double quotes ex: foo</param>
/// <returns>double quoted string ex: "foo"</returns>
public static string AddDoubleQuotes(this string value)
{
...
How to drop a table if it exists?
...
Fwiw -- The 'U' for the second param apparently means "Only look for objects with this name that are tables". One source. So OBJECT_ID('TableName') isn't wrong, but it's not insanely precise either, thus 'U' in @Martin's excellent answer.
...