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Tool to read and display Java .class versions
...ed to do is read the first 8 bytes.
ClassFile {
u4 magic;
u2 minor_version;
u2 major_version;
For class file version 51.0 (Java 7), the opening bytes are:
CA FE BA BE 00 00 00 33
...where 0xCAFEBABE are the magic bytes, 0x0000 is the minor version and 0x0033 is the major version.
...
Converting an int to std::string
...
You can use std::to_string in C++11
int i = 3;
std::string str = std::to_string(i);
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Error handling with node.js streams
...eam module
instantiate ( or inherit from) the Transform class
implement a _transform method which takes a (chunk, encoding, callback).
The chunk is your data. Most of the time you won't need to worry about encoding if you are working in objectMode = true. The callback is called when you are done...
How can I maximize a split window?
...l T) to move any open window to its own tab.
As mentioned by others Ctrl+W_ / Ctrl+W| to maximize within the current tab/window layout (while respecting min height/width settings for various other windows).
(Ctrl+W= resizes all windows to equal size, respecting the minimum height/width settings)
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How to avoid 'cannot read property of undefined' errors?
...tive "in", but allows paths.
var testObject = {a: {b: {c: 'walrus'}}};
if(_.has(testObject, 'a.b.c')) {
//Safely access your walrus here
}
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What's the best way to inverse sort in scala?
...way of changing the sign, if you sort by some numeric value
list.sortBy(- _.size)
More generally, sorting may be done by method sorted with an implicit Ordering, which you may make explicit, and Ordering has a reverse (not the list reverse below)
You can do
list.sorted(theOrdering.reverse)
If...
When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
...oc().
0xBAADF00D Bad Food Memory allocated by LocalAlloc() with LMEM_FIXED,but
not yet written to.
0xFEEEFEEE OS fill heap memory, which was marked for usage,
but wasn't allocated by HeapAlloc() or LocalAlloc().
...
What is Scala's yield?
...I use yield instead of map? This map code is equivalent val res = args.map(_.toUpperCase) , right?
– Geo
Jun 27 '09 at 12:23
4
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error: ‘uint16_t’ does not name a type - c++1y / stl - 清泛IT社区，为创新赋能！
... OTHER
* DEALINGS IN THE SOFTWARE.
*/
/* Created by Danny Smith <danny_r_smith_2001@yahoo.co.nz> */
#ifndef _STDINT_H
#define _STDINT_H
#pragma GCC system_header
#include <_mingw.h>
/* ISO C9x 7.18 Integer types <stdint.h>
* Based on ISO/IEC SC22/WG14 9899...
Why does Ruby 1.9.2 remove “.” from LOAD_PATH, and what's the alternative?
...s to Ruby 1.9.2 no longer make the current directory . part of your LOAD_PATH . I have a non-trivial number of Rakefiles that assume that . is part of the LOAD_PATH , so this broke them (they reported "no such file to load" for all require statements that based off the project path). Was there...