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Optimising Android application before release [closed]
...g
recycle complex java objects such as XmlPullParserFactory/BitmapFactory/StringBuilder/Matcher etc.
For more battery tricks see Coding for Life - Battery Life, That Is.
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To draw an Underline below the TextView in Android
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There are three ways of underling the text in TextView.
SpannableString
setPaintFlags(); of TextView
Html.fromHtml();
Let me explain you all approaches :
1st Approach
For underling the text in TextView you have to use SpannableString
String udata="Underlined Text";
SpannableString con...
What is the proper way to format a multi-line dict in Python?
...(4, 'd'),
],
}
Similarly, here's my preferred way of including large strings without introducing any whitespace (like you'd get if you used triple-quoted multi-line strings):
data = (
"iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABG"
"l0RVh0U29mdHdhcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAA...
Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?
...egers, you count starting from 0 and you end at 255. But with places in a string, you count starting from the 1st place, so doesn't it make sense to end at the 256th place, because you started at 1 instead of 0? I'm not agreeing with varchar(256) entirely just yet, because of string_length() resul...
How to print color in console using System.out.println?
...you could define constants like these for the colors:
public static final String ANSI_RESET = "\u001B[0m";
public static final String ANSI_BLACK = "\u001B[30m";
public static final String ANSI_RED = "\u001B[31m";
public static final String ANSI_GREEN = "\u001B[32m";
public static final String ANSI_...
Is there any use for unique_ptr with array?
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here's a reason to not use vector: sizeof(std::vector<char>) == 24; sizeof(std::unique_ptr<char[]>) == 8
– Arvid
Sep 12 '14 at 22:34
15
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Are there any reasons to use private properties in C#?
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I use them if I need to cache a value and want to lazy load it.
private string _password;
private string Password
{
get
{
if (_password == null)
{
_password = CallExpensiveOperation();
}
return _password;
}
}
...
Removing all non-numeric characters from string in Python
How do we remove all non-numeric characters from a string in Python?
7 Answers
7
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Why unsigned integer is not available in PostgreSQL?
...rser to deal with literals because PgSQL has such an easy way to interpret strings as literals, just write '4294966272'::uint4 as your literals. Casts shouldn't be a huge deal either. You don't even need to do range exceptions, you can just treat the semantics of '4294966273'::uint4::int as -1024. O...
Can hash tables really be O(1)?
...ll as the above, if you are using immutable objects as your keys e.g. Java Strings, having calculated the hash once, you can remember it and not have to calculate it again. On the other hand, you can't usually rely on the hash to tell if two keys are equal once you have found the right bucket, so f...