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What is the difference between require() and library()?
...quire() unless you actually will be using the value it returns e.g in some error checking loop such as given by thierry.
In most other cases it is better to use library(), because this will give an error message at package loading time if the package is not available. require() will just fail witho...
Check if file exists but prevent 404 error in console from showing up [duplicate]
...e to check to see if a file/page exists via JavaScript but prevent the 404 Error from showing up in the console?
1 Answer
...
fatal error \"vector iterator + offset out of range\" \"standard C++ ...
fatal error "vector iterator + offset out of range" "standard C++ libraries out of range"代码如下：#include <iostream> #include <iterator> 使用back_inserter #include <algorithm> #include <vector> usin...代码如下：
#include <iostream>
#include <iterator>//使用back_inserter ...
error C2872: “count”: 不明确的符号 - C/C++ - 清泛网 - 专注C/C++及内核技术
error C2872: “count”: 不明确的符号error C2872: count: 不明确的符号 可能是conflict.cpp(4) : int count 或 C: Program Files Microsoft Visual Studio 11.0 V...error C2872: “count”: 不明确的符号
可能是“conflict.cpp(4) : int count” 或 “C:\Program Files\Microsoft ...
Unfortunately MyApp has stopped. How can I solve this?
...es in "What is a stack trace, and how can I use it to debug my application errors?"
The Problem
Your application quit because an uncaught RuntimeException was thrown.
The most common of these is the NullPointerException.
How to solve it?
Every time an Android application crashes (or any Java app...
What is the __del__ method, How to call it?
... than complicated.
Special cases aren't special enough to break the rules.
Errors should never pass silently.
In the face of ambiguity, refuse the temptation to guess.
There should be one – and preferably only one – obvious way to do it.
If the implementation is hard to explain, it's a bad idea....
How do I run Asynchronous callbacks in Playground
...ckoverflow.com")!
URLSession.shared.dataTask(with: url) { data, response, error in
guard let data = data, error == nil else {
print(error ?? "Unknown error")
return
}
let contents = String(data: data, encoding: .utf8)
print(contents!)
}.resume()
PlaygroundPage.curr...
What does it mean when an HTTP request returns status code 0?
...
I believe the error code indicates that the response was empty, (as not even headers were returned). This means the connection was accepted and then closed gracefully (TCP FIN).
There are a number of things which could cause this, but base...
What does “zend_mm_heap corrupted” mean
...y application that I've never had before. I decided to check the Apache's error log, and I found an error message saying "zend_mm_heap corrupted". What does this mean.
...
How to fix Git error: object file is empty?
When I try to commit changes, I get this error:
24 Answers
24
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