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Glorified classes in the Java language
...icket of code that was originally written with xdoclet processing and then converted to annotations. Oh, how I prefer annotations to that (even though, with suitable maven incantations, the net effect is the same).
– Donal Fellows
Aug 14 '10 at 15:50
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SQL NVARCHAR and VARCHAR Limits
...sult will be typed as nvarchar(max).
nvarchar(max) + varchar(n) will first convert the varchar(n) input to nvarchar(n) and then do the concatenation. If the length of the varchar(n) string is greater than 4,000 characters the cast will be to nvarchar(4000) and truncation will occur.
Datatypes of s...
How can I pass a Bitmap object from one activity to another
... putExtra(CONTENT_SELECTED_BITMAP_KEY, contentPlayer.image)
})
3. Convert ByteArray back to Bitmap.
Utils.kt
fun ByteArray.byteArrayToBitmap(context: Context) =
run {
BitmapFactory.decodeByteArray(this, BITMAP_OFFSET, size).run {
if (this != null) this
...
Best way to store time (hh:mm) in a database
.... Why spend extra time writing code that loads an int, manipulates it, and converts it into a datetime, when you could just load a datetime?
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In C#, why is String a reference type that behaves like a value type?
...rence, rather than primitive, type. Plus, if string were a value type then converting it to object would require it to be boxed, a needless inefficiency).
– Qwertie
Jun 25 '10 at 15:50
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How to normalize a NumPy array to within a certain range?
...performed.
If they are not already of floating-point dtype, you'll need to convert them using astype. For example,
image = image.astype('float64')
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Java 256-bit AES Password-Based Encryption
...ecretKey secret = null;
// since we pass it as a string of input, convert to a actual byte buffer here
mSalt = Hex.decodeHex (salt.toCharArray ());
Db ("got salt " + Hex.encodeHexString (mSalt));
// get initialization vector from passed string
mInitVec = Hex....
How do I print a double value with full precision using cout?
...limits<double>::digits10 + 2) because 2 extra digits are needed when converting from decimal back to the binary representation to ensure the value is rounded to the same original value. Here is a paper with some details: docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html
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When should I use Struct vs. OpenStruct?
... = 2;
Here are some common use cases.
OpenStructs can be used to easily convert hashes to one-off objects which respond to all the hash keys.
h = { a: 1, b: 2 }
o = OpenStruct.new(h)
o.a = 1
o.b = 2
Structs can be useful for shorthand class definitions.
class MyClass < Struct.new(:a,:b,:c)...
How to output something in PowerShell
...
Objects also don't get blindly converted to string, but pass through a formatter which decides on what to do with them. That's why you see Get-ChildItem's output coming in a table form, for example, and results with many properties (e.g. WMI) default to Fo...