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How to use double or single brackets, parentheses, curly braces
...00; i++)); do [[ "$i" = 1000 ]]; done
real 0m24.548s
user 0m24.337s
sys 0m0.036s
$ time for ((i=0; i<10000000; i++)); do [ "$i" = 1000 ]; done
real 0m33.478s
user 0m33.478s
sys 0m0.000s
The braces, in addition to delimiting a variable name are used for parameter expansion so you c...
How to get Resource Name from Resource id
... value to be filled in these 10 editbox after this string is parserd it is converted into HashMap. Now instead manually mapping each value (corresponding to key of hashmap) to editText text.. i am writting a method that could this work for me .
– Code_Life
Apr ...
Signed versus Unsigned Integers
...
Another difference is when you are converting between integers of different sizes.
For example, if you are extracting an integer from a byte stream (say 16 bits for simplicity), with unsigned values, you could do:
i = ((int) b[j]) << 8 | b[j+1]
(shou...
Java integer to byte array
...nificant 8 bytes. It also avoids dragging the input number's sign into the converted octet.
– Carl Smotricz
May 30 '14 at 13:42
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Why is creating a new process more expensive on Windows than Linux?
...'poorly ported' because it doesn't run well on a poorly designed operating system full of compatibility cruft that slows down process creation is ridiculous.
– Miles Rout
Feb 5 '17 at 21:08
...
Set selected index of an Android RadioGroup
...as R.id.radioButton1), and reduces the need to implement a lookup table to convert index to view id.
– Siavash
Feb 17 '15 at 3:51
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Why does int i = 1024 * 1024 * 1024 * 1024 compile without error?
...tion is basically performed modulus 2^32 in Java, after which the value is converted back into a signed integer.
Other languages or API's use a dynamic number of bits (BigInteger in Java), raise an exception or set the value to a magic value such as not-a-number.
...
Base64 length calculation?
...al chunks. One or two bytes extra at the end of the string will still get converted to four bytes in the base64 string when padding is added. Unless you have a very specific use, it is best to add the padding, usually an equals character. I added an extra byte for a null character in C, because A...
Add object to ArrayList at specified index
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You can use Array of objects and convert it to ArrayList-
Object[] array= new Object[10];
array[0]="1";
array[3]= "3";
array[2]="2";
array[7]="7";
List<Object> list= Arrays.asList(array);
ArrayList will be- [1, null, 2, 3, null, null, null, 7, null...
Is null reference possible?
...ich may not be possible to do. Consider this simple function inside a file converter.cpp:
int& toReference(int* pointer) {
return *pointer;
}
When the compiler sees this function, it does not know whether the pointer is a null pointer or not. So it just generates code that turns any pointer...