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Python __str__ and lists
In Java, if I call List.toString(), it will automatically call the toString() method on each object inside the List. For example, if my list contains objects o1, o2, and o3, list.toString() would look something like this:
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How to calculate the time interval between two time strings
...is what you need here. Specifically, the strptime function, which parses a string into a time object.
from datetime import datetime
s1 = '10:33:26'
s2 = '11:15:49' # for example
FMT = '%H:%M:%S'
tdelta = datetime.strptime(s2, FMT) - datetime.strptime(s1, FMT)
That gets you a timedelta object that...
How to concatenate strings with padding in sqlite
...
The || operator is "concatenate" - it joins together the two strings of
its operands.
From http://www.sqlite.org/lang_expr.html
For padding, the seemingly-cheater way I've used is to start with your target string, say '0000', concatenate '0000423', then substr(result, -4, 4) for '...
How to make a countdown timer in Android?
....Date;
public class MainActivity extends AppCompatActivity {
private String EVENT_DATE_TIME = "2020-12-31 10:30:00";
private String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss";
private LinearLayout linear_layout_1, linear_layout_2;
private TextView tv_days, tv_hour, tv_minute, tv_second;
...
Convert base-2 binary number string to int
I'd simply like to convert a base-2 binary number string into an int, something like this:
8 Answers
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Constructor in an Interface?
...at calls each of these constructors.
Or in code:
interface Named { Named(String name); }
interface HasList { HasList(List list); }
class A implements Named, HasList {
/** implements Named constructor.
* This constructor should not be used from outside,
* because List parameter is missin...
Binding to static property
I'm having a hard time binding a simple static string property to a TextBox.
12 Answers
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Get an object's class name at runtime
...u could also create a type-declaration instead: interface Function { name: string; } -- this will extend the "native" definition.
– John Weisz
Sep 21 '16 at 12:52
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ios Upload Image and Text using HTTP POST
...onary* _params = [[NSMutableDictionary alloc] init];
[_params setObject:[NSString stringWithString:@"1.0"] forKey:[NSString stringWithString:@"ver"]];
[_params setObject:[NSString stringWithString:@"en"] forKey:[NSString stringWithString:@"lan"]];
[_params setObject:[NSString stringWithFormat:@"%d",...
High Quality Image Scaling Library [closed]
...encoders
/// </summary>
private static Dictionary<string, ImageCodecInfo> encoders = null;
/// <summary>
/// A lock to prevent concurrency issues loading the encoders.
/// </summary>
private static object encodersLock = new obj...