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RabbitMQ and relationship between channel and connection
...e design of AMQP is that the channel is typically closed in response to an error (e.g. re-declaring a queue with different parameters before deleting the existing queue).
Since they are transient, channels should not be pooled by your app.
The server uses an integer to identify a channel. When the t...
Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...第一个域加10并打印出来。
$ awk '{print ($1 > 5 ? "ok "$1: "error"$1)}' test-----如果第一个域大于5则打印问号后面的表达式值，否则打印冒号后面的表达式值。
$ awk '/^root/,/^mysql/' test----打印以正则表达式root开头的记录到以正则表...
JavaScript closures vs. anonymous functions
... JS would be like without closures.
Without closures, this would throw an error
function outerFunc(){
var outerVar = 'an outerFunc var';
return function(){
alert(outerVar);
}
}
outerFunc()(); //returns inner function and fires it
Once outerFunc has returned in an imaginary c...
Why isn't `int pow(int base, int exponent)` in the standard C++ libraries?
...ble option. The programmer can use the floating point version with all the error reporting available instead.
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ab load testing
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It is not working... I am getting this error : Benchmarking localhost (be patient)...apr_socket_recv: Connection refused (111)
– Vijaysinh Parmar
Aug 4 '17 at 6:32
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What does the Reflect object do in JavaScript?
...ther return obj when the property was successfully defined, or throw a TypeError otherwise, Reflect.defineProperty(obj, name, desc) is specced to simply return a boolean that indicates whether or not the property was successfully defined. This allows you to refactor this code:
try {
Object.define...
How does the ARM architecture differ from x86? [closed]
...e string bytewise */
while on ARM shortest form might look like (without error checking etc.)
top:
ldrb r2, [r0, #1]! /* load a byte from address in r0 into r2, increment r0 after */
ldrb r3, [r1, #1]! /* load a byte from address in r1 into r3, increment r1 after */
subs r2, r3, r2 /* subtract...
Is a statically-typed full Lisp variant possible?
...
Dylan: Extending Dylan's type system for better type inference and error detection
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How to calculate moving average using NumPy?
...general idea behind the answer was weighed more heavily than an off-by-one error in the implementation, but who knows.
– Jaime
Aug 22 '13 at 19:33
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How can I improve my paw detection?
...t changes > X in the other direction it is considered a turn to counter errors).
If you know at what frames it turns, you will know the frame where the pressure was the most hard and you will know where it was the least hard between the two paws. In theory, you then would know the two frames whe...