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The operation is in list? cannot accept the arguments: , [""...
...溃。
多加一个判断（文本.是否为空），可以避免这类问题：
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The arguments,[“xxx“], [false], [0]
界面很多按钮时，如何获取当前被点击的按钮的文本？ - App Inventor 2 中文...
Q：请教一个问题。假如我设计一个计算器，把0-9文本标到按键上，我用什么方法获取到每一个按下的值？辟如888，我要把这个值显示在标签里。
A：使用“任意按钮”的文本方法，用于获取当前被点击的按钮的文本，参数是当...
Modbus硬件控制01——什么是Modbus - 创客硬件开发 - 清泛IT社区，为创新赋能！
...再回复；如果不一样，说明你这个数据在传输的时候出了问题，数据不对的，所以就抛弃了。
2、实战只谈理论大家可能不太明白，下面举一个例子。Modbus-RTU协议一般我们用的最多功能码就是03和06，大部分都是用modbus来查询传...
How to convert 1 to true or 0 to false upon model fetch
...d"]==="0"); // false
console.log(obj["isChecked"]==="Elephant"); // false
PHP
Same concept in PHP
$obj["isChecked"] = ($obj["isChecked"] == "1");
The same operator limitations as stated above for JavaScript apply.
Double Not
The 'double not' also works. It's confusing when people first read it but...
How to auto-remove trailing whitespace in Eclipse?
...
This option appears in PDT for PHP as well, under Save Actions.
– thaddeusmt
Feb 28 '11 at 5:50
1
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How to enable CORS in AngularJs
...the server - just pass the headers from within your script. If you have a PHP backend it would be header('Access-Control-Allow-Origin: *');
– davidkonrad
Feb 27 '16 at 23:32
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Storing Data in MySQL as JSON
...
Yeah, im looking at Mongo, and php has an extension for it and the actual syntax for the DB transactions seems easier than MySQL and the overall working with it seems easier that couchDB. Thanks, I think im going to go with MongoDB :)
...
How to specify Composer install path?
...allers package, as symfony1 have a plugin there :) Check Symfony1Installer.php
– spirit
Apr 2 at 8:04
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Why doesn't C# support the return of references?
...rn ref x;
else
return ref y;
}
and then call it with
int a = 123;
int b = 456;
ref int c = ref Max(ref a, ref b);
c += 100;
Console.WriteLine(b); // 556!
I know empirically that it is possible to build a version of C# that supports these features because I have done so. Advanced pr...
Make .gitignore ignore everything except a few files
...rder:
For example, ignore everything in folder "application" except index.php and folder "config" pay attention to the order.
You must negate want you want first.
FAILS
application/*
!application/config/*
!application/index.php
WORKS
!application/config/*
!application/index.php
applicatio...