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how to check the jdk version used to compile a .class file [duplicate]
... looking for this on the command line (for a class called MyClass):
On Unix/Linux:
javap -verbose MyClass | grep "major"
On Windows:
javap -verbose MyClass | findstr "major"
You want the major version from the results. Here are some example values:
Java 1.2 uses major version 46
Java 1.3 us...
Auto-expanding layout with Qt-Designer
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After creating your QVBoxLayout in Qt Designer, right-click on the background of your widget/dialog/window (not the QVBoxLayout, but the parent widget) and select Lay Out -> Lay Out in a Grid from the bottom of the context-menu. The QVBoxLayout s...
Best practices for API versioning? [closed]
...he users of that API.
Since evolution of an application and, to a lesser extent, its API is a fact of life and that it's even similar to the evolution of a seemingly complex product like a programming language, the URI design should have less natural constraints and it should be preserved over time...
Why is processing a sorted array faster than processing an unsorted array?
...some strange reason, sorting the data miraculously makes the code almost six times faster:
26 Answers
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How to get the response of XMLHttpRequest?
I'd like to know how to use XMLHttpRequest to load the content of a remote URL and have the HTML of the accessed site stored in a JS variable.
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Can someone explain the “debounce” function in Javascript
...a new anonymous function
return function() {
// reference the context and args for the setTimeout function
var context = this,
args = arguments;
// Should the function be called now? If immediate is true
// and not already in a timeout then the answer is: Yes
v...
How can I find the data structure that represents mine layout of Minesweeper in memory?
... a simple WinDbg command that reveals all the mines but it is old, is not explained in any detail and really isn't what I'm looking for.
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How do I get current date/time on the Windows command line in a suitable format for usage in a file/
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This solution is locale dependent, Rory gave the example for UK for other locales where the date comes as 22-02-2012 you need to replace delims=/ with delims=-
– Nuno Furtado
Feb 28 '12 at 21:59
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How to printf uint64_t? Fails with: “spurious trailing ‘%’ in format”
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The ISO C99 standard specifies that these macros must only be defined if explicitly requested.
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
... now PRIu64 will work
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select count(*) from table of mysql in php
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After 5.x version this query will not work just replace mysql with mysqli to make it work.
– ajay verma
Apr 2 '18 at 16:09
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