
Can I use make (chan someStruct) in go? - Stack Overflow
2017年6月11日 · Channel is used when communicating between concurrent functions. In your sample, write and read operation are not concurrent, thus resulting deadlock. Perform read or write inside a goroutine , e.g. go func() { c <- name{"sfsaf", 1} }().
Get request response text prints invalid characters
From Response.text 's documentation: Content of the response, in unicode. If Response.encoding is None, encoding will be guessed using chardet. The encoding of the response content is determined based solely on HTTP headers, following RFC 2616 to the letter. If you can take advantage of non-HTTP knowledge to make a better guess at the encoding, you should set …
oop - Dynamically created instances in python - Stack Overflow
2023年1月21日 · type is for creating instances of type which are just your regular class es not instances of a class, you need to call an existing class to create an instance of it, so sth like A = list_classes[type_obj](3, "xxx")
sql - How to use group by and count in mysql - Stack Overflow
2018年3月21日 · Here I am having 3 table using I have to take the count trip_details id allocationId tripId 1 7637 aIz2o 2 7626 osseC 3 7536
FIREBASE WARNING: Provided authentication credentials are invalid
2016年11月7日 · I am trying to use Firebase in node.js but every time I restart the server I am getting following error: FIREBASE WARNING: Provided authentication credentials are invalid. This usually indicates...
Computing the size of array in text file in bash - Stack Overflow
I have a text file that sometimes- not always - will have an array with a unique name like this unique_array=(1,2,3,4,5,6) I would like to find the size of the array-6 in the above example- when it exists and skip it or return -1 if it doesnt exist. grepping the file will tell me if the array exists but not how to find its size. The array can fill multiple lines like unique_array=(1,2,3, 4,5,6 ...
c++ - Regex backreference not working - Stack Overflow
2016年11月9日 · Are you working in C or C++? The answers are vastly, hugely, completely different. C++ has regular expressions in the standard library; C does not. If you're programming in C, the question becomes "which regex package are you using". If you're programming in C++, that's really a non-issue; you're using <regex> unless there are peculiar requirements to the …
java - How do I get the TreeMap (or other Map if necessary) …
2015年1月21日 · get gets by key, not index position. Iterate over the entrySet or keySet. Setup: TreeMap<Integer, String> treeMap = new TreeMap<Integer, String>(); treeMap.put(3, "Alessandro"); treeMap.put(12, "Mario"); treeMap.put(1, "Marco"); Example using entrySet, in which case you get a Map.Entry<Integer, String> for each iteration: for (Map.Entry<Integer, …
On button click, effect multiple elements on page.
2019年1月2日 · I'm quite lost here so any help appreciated! I'm looking for when a button (3 buttons in total) is clicked that it affects multiple elements: 1. it highlights 3 boxes. 2. It shows an area of text....
Highest scored 'deadlock' questions - Page 3 - Stack Overflow
2013年3月14日 · Stack Overflow | The World’s Largest Online Community for Developers