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How to automatically generate a stacktrace when my program crashes
...b.h>
#include <unistd.h>
void handler(int sig) {
void *array[10];
size_t size;
// get void*'s for all entries on the stack
size = backtrace(array, 10);
// print out all the frames to stderr
fprintf(stderr, "Error: signal %d:\n", sig);
backtrace_symbols_fd(array, size, STDE...
MySQL: Set user variable from result of query
...-+
| 123456 | 5 |
| 111111 | 5 |
+--------+-------+
2 rows in set (0.00 sec)
Note that for SET, either = or := can be used as the assignment operator. However inside other statements, the assignment operator must be := and not = because = is treated as a comparison operator in non-SET stat...
View a file in a different Git branch without changing branches
...ic revision in Git?
How to get just one file from another branch
UPDATE 2015-01-19:
Nowadays you can use relative paths with git show a1b35:./file.txt.
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Is it possible to assign numeric value to an enum in Java?
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public enum EXIT_CODE {
A(104), B(203);
private int numVal;
EXIT_CODE(int numVal) {
this.numVal = numVal;
}
public int getNumVal() {
return numVal;
}
}
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What are the Ruby Gotchas a newbie should be warned about? [closed]
...s.
To denote floating point numbers, one must follow with a zero digit (99.0) or an explicit conversion (99.to_f). It is insufficient to append a dot (99.), because numbers are susceptible to method syntax.
Boolean evaluation of non-boolean data is strict: 0, "" and [] are all evaluated to true. In ...
How to add a ScrollBar to a Stackpanel
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JoeyJoey
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What does |= (single pipe equal) and &=(single ampersand equal) mean
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edited Dec 24 '19 at 0:20
djeikyb
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answered ...
How to increase the maximum number of opened editors in IntelliJ?
I am building a grails-app with IntelliJ 9.0 and I am a huge fan of the CTR+TAB shortcut that switches between active editors.
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NASM x86汇编入门指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
...工作依靠21号中断(int 21h)来完成，并且BIOS服务中断用int 10h和int 16h，在linux中，所有的函数通过linux系统调用最终被内核处理，并且通过int 80h陷入内核代替用户空间执行，这称为linux的软中断(关于软中断，这里不细讲，我以后会...
How to display the current year in a Django template?
...s the inbuilt template tag to display the present year dynamically. Like "2011" what would be the template tag to display that?
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