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Go: panic: runtime error: invalid memory address or nil pointer dereference
... res.Body before you check for the err.
The defer only defers the function call. The field and method are accessed immediately.
So instead, try checking the error immediately.
res, err := client.Do(req)
if err != nil {
return nil, err
}
defer res.Body.Close()
...
Is async HttpClient from .Net 4.5 a bad choice for intensive load applications?
I recently created a simple application for testing the HTTP call throughput that can be generated in an asynchronous manner vs a classical multithreaded approach.
...
Why is it possible to recover from a StackOverflowError?
... of the currently active function
delete its stack frame, proceed with the calling function
abort the execution of the caller
delete its stack frame, proceed with the calling function
and so on...
... until the exception is caught. This is normal (in fact, necessary) and independent of which excep...
R programming: How do I get Euler's number?
...ply, but I don't agree with you. I don't agree the logic that "most people called "e" as Euler's constant and thus we should called it the same way on stackoverflow". Math is a subtle subject and the terminology really matters. I have right and responsibility to tell people here the truth instead of...
What is the difference between native code, machine code and assembly code?
...ter dereferencing or array bounds overflow.
Strictly speaking, most dynamically-typed languages — such as Perl, Python, PHP and Ruby — are also managed code. However, they are not commonly described as such, which shows that managed code is actually somewhat of a marketing term for the really b...
How to use a servlet filter in Java to change an incoming servlet request url?
...d a check in the code if the URL needs to be changed and if not, then just call FilterChain#doFilter(), else it will call itself in an infinite loop.
Alternatively you can also just use an existing 3rd party API to do all the work for you, such as Tuckey's UrlRewriteFilter which can be configured t...
Split an NSString to access one particular piece
... The question says "I only want to save the 10 in a string". I could have called the variable anything. The answer is correct for the question. In fact, nowhere does the question say it is a date, so I have amended the answer.
– JeremyP
Jul 27 '15 at 8:46
...
How do you print in a Go test using the “testing” package?
...tput: log all tests as they are run. Also print all
text from Log and Logf calls even if the test succeeds.
Package testing
func (*T) Log
func (c *T) Log(args ...interface{})
Log formats its arguments using default formatting, analogous to Println, and records the text in the err...
SQL Server - stop or break execution of a SQL script
...o database connection.
If you are NOT logged in as admin, the RAISEERROR() call itself will fail and the script will continue executing.
When invoked with sqlcmd.exe, exit code 2745 will be reported.
Reference: http://www.mydatabasesupport.com/forums/ms-sqlserver/174037-sql-server-2000-abort-whole...
How to show the loading indicator in the top status bar
... sharedApplication].networkActivityIndicatorVisible = NO
So you can just call ShowNetworkActivityIndicator(); or HideNetworkActivityIndicator(); from within your app (as long as the header is included of course!).
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