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MySQL: Transactions vs Locking Tables
...the same type of code in parallel. They'll be retrieve your balance (say, $100), do their transactions (take out the $20 you're paying, and the $30 they're screwing you over with), and now both code paths have two different balances: $80 and $70. Depending on which ones finishes last, you'll end up ...
Spring Boot Remove Whitelabel Error Page
...ibutes method signature has changed, please note dependency on Spring-Boot v1 and possibly give hints for v2, thx.
– chrisinmtown
Nov 13 '18 at 11:21
1
...
A worthy developer-friendly alternative to PayPal [closed]
...ST — you can even use curl to charge cards:
curl https://api.stripe.com/v1/charges
-u <YOUR_API_KEY>:
-d amount=400
-d currency=usd
-d "description=Charge for user@example.com"
-d "card[number]=4242424242424242"
-d "card[exp_month]=12"
-d "card[exp_year]=2012"
-d "ca...
How can I show dots (“…”) in a span with hidden overflow?
...llipsis = function () {
return this.eachAsync({
delay: 100,
bulk: 0,
loop: function (index) {
var el = $(this);
if (el.data("fullText") !== undefined) {
el.html(el.data("fullText"));
} el...
Cache an HTTP 'Get' service response in AngularJS?
...ngular-data is deprecated now. The latest on is js-data-angular js-data.io/v1.8.0/docs/js-data-angular
– demisx
May 28 '15 at 6:37
...
How to get method parameter names?
...
100
In CPython, the number of arguments is
a_method.func_code.co_argcount
and their names are i...
MongoDB sort排序、index索引教程 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...", "url" : "https://www.tsingfun.com", "tags" : [ "mongodb" ], "likes" : 100 }
以下实例演示了 col 集合中的数据按字段 likes 的降序排列：
>db.col.find({},{"title":1,_id:0}).sort({"likes":-1})
结果：
{ "title" : "PHP 教程" }
{ "title" : "Java 教程" }
{ "title" : "Mon...
How to calculate percentage with a SQL statement
...s does work. The answer by gordyii was close but had the multiplication of 100 in the wrong place and had some missing parenthesis.
Select Grade, (Count(Grade)* 100 / (Select Count(*) From MyTable)) as Score
From MyTable
Group By Grade
...
Tracking the script execution time in PHP
...d
function rutime($ru, $rus, $index) {
return ($ru["ru_$index.tv_sec"]*1000 + intval($ru["ru_$index.tv_usec"]/1000))
- ($rus["ru_$index.tv_sec"]*1000 + intval($rus["ru_$index.tv_usec"]/1000));
}
$ru = getrusage();
echo "This process used " . rutime($ru, $rustart, "utime") .
" ms for i...
How to import the class within the same directory or sub directory?
...
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