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Java integer to byte array
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using Java NIO's ByteBuffer is very simple:
byte[] bytes = ByteBuffer.allocate(4).putInt(1695609641).array();
for (byte b : bytes) {
System.out.format("0x%x ", b);
}
output:
0x65 0x10 0xf3 0x29
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Why is an int in OCaml only 31 bits?
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See the the "representation of integers, tag bits, heap-allocated values" section of https://ocaml.org/learn/tutorials/performance_and_profiling.html for a good description.
The short answer is that it is for performance. When passing an argument to a function it is either passe...
What is the difference between indexOf() and search()?
...nt - try "hello.".search(".") - it returns 0, not 5 because . is the regex token for "any character"
– user993683
Jun 22 '17 at 3:05
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Save PL/pgSQL output from PostgreSQL to a CSV file
... statement, because there is no way of connecting the input/output stream. PHP's PostgreSQL handler (not PDO) includes very basic pg_copy_from and pg_copy_to functions which copy to/from a PHP array, which may not be efficient for large data sets.
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Using Laravel Homestead: 'no input file specified'
...successfully been able to get to the "You have arrived" screen when I run "php artisan serve" but when I try to do the same thing via Vagrant, I get "no input file specified". My Homestead.yaml file looks like this:
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Why cast an unused function parameter value to void?
...er name in the body is to avoid warnings like
unused.c: In function ‘l_alloc’:
unused.c:3:22: warning: unused parameter ‘ud’ [-Wunused-parameter]
void *l_alloc (void *ud, void *ptr, size_t osize, size_t nsize) {
^~
This warning can be suppressed with using the actu...
.NET List Concat vs AddRange
...ed execution, using Concat would likely be faster because it avoids object allocation - Concat doesn't copy anything, it just creates links between the lists so when enumerating and you reach the end of one it transparently takes you to the start of the next!
– Greg Beech
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Java - removing first character of a string
...u are actually creating a new string with all the overhead implied (memory allocation and garbage collection). So if you want to make a series of modifications to a string and care only about the final result (the intermediate strings will be dead as soon as you 'modify' them), it may make more sen...
Upload files with HTTPWebrequest (multipart/form-data)
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@php-jquery-programmer, it's generic example code so the parameters have generic names. Think of "param1" as "your_well_named_param_here" and please reconsider your -1.
– Joshcodes
Mar 5 ...
What is the difference between static_cast and C style casting?
... in a 4-byte pointer ( a pointer to 4-byte datatype) pointing to 1 byte of allocated memory, writing to this pointer will either cause a run-time error or will overwrite some adjacent memory.
*p = 5; // run-time error: stack corruption
In contrast to the C-style cast, the static cast will allow t...