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libunwind：记录程序崩溃堆栈 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
....la
make
make install
记录堆栈的代码如下：
static void log_backtrace(void) {
char name[256];
unw_cursor_t cursor;
unw_context_t uc;
unw_word_t ip, sp, offp;
unw_getcontext(&uc);
unw_init_local(&cursor, &uc);
syslog(LOG_ERR, "--illegal memory access--");
while(unw_...
select count(*) from table of mysql in php
... to alias the aggregate using the as keyword in order to call it from mysql_fetch_assoc
$result=mysql_query("SELECT count(*) as total from Students");
$data=mysql_fetch_assoc($result);
echo $data['total'];
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How to get index in Handlebars each helper?
...hanged in the newer versions of Ember.
For arrays:
{{#each array}}
{{_view.contentIndex}}: {{this}}
{{/each}}
It looks like the #each block no longer works on objects. My suggestion is to roll your own helper function for it.
Thanks for this tip.
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Get list of databases from SQL Server
...uery:
SELECT name FROM master.dbo.sysdatabases
or if you prefer
EXEC sp_databases
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How to resize a custom view programmatically?
...
this.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, theSizeIWant));
Problem solved!
NOTE: Be sure to use the parent Layout's LayoutParams. Mine is LinearLayout.LayoutParams!
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What are the differences between utf8_general_ci and utf8_unicode_ci? [duplicate]
...
utf8_general_ci is a very simple — and on Unicode, very broken — collation, one that gives incorrect results on general Unicode text. What it does is:
converts to Unicode normalization form D for canonical decomposition
re...
一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
...le]
来源：https://www.yiqi.com/zt5765/news_36129.html
How to unit test an object with database queries
... as in the following pseudo-code:
class Bar
{
private FooDataProvider _dataProvider;
public instantiate(FooDataProvider dataProvider) {
_dataProvider = dataProvider;
}
public getAllFoos() {
// instead of calling Foo.GetAll() here, we are introducing an extra layer ...
Click Event on UIImageView programmatically in ios
...wift 3
On UIImageView enable UserInterAction
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
super.touchesEnded(touches, with: event)
if let touch = touches.first {
if touch.view == self.imgVwPostPreview { //image View property
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Is it better to use C void arguments “void foo(void)” or not “void foo()”? [duplicate]
...-declarator ( parameter-type-list )
direct-declarator ( identifier-list_opt )
so only the identifier-list version can be empty because it is optional (_opt).
direct-declarator is the only grammar node that defines the parenthesis (...) part of the declarator.
So how do we disambiguate and us...