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How does “304 Not Modified” work exactly?
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When to throw an exception?
... Hmm, no. Exceptions can be used as control flow mechanisms if maximum performance isn't required, which is true of most web-apps. Python uses the exception 'StopIteration' to terminate iterators, and it works very well. The cost is nothing compared to IO, etc.
– Seun Osewa
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Expansion of variables inside single quotes in a command in Bash
...h means that it's taken literally, without variable expansion or any other form of interpretation.
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How to delete a stash created with git stash create?
...one. i.e. stash@{0}, otherwise must be a valid stash log reference of the form stash@{}.
example:
git stash drop stash@{5}
This would delete the stash entry 5. To see all the list of stashes:
git stash list
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Using Moq to mock an asynchronous method for a unit test
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Is a Java string really immutable?
...rings which is the first step of further optimizations using the context information of the caller. This is a big impact.
– Holger
Jan 8 '14 at 18:27
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Performing regex Queries with pymongo
I am trying to perform a regex query using pymongo against a mongodb server. The document structure is as follows
4 Answers...
Comma in C/C++ macro
...void(t)>::type name
FOO((std::map<int, int>), map_var);
Because forming function types ignores extra parentheses, you can use this macro with or without parentheses where the type name doesn't include a comma:
FOO((int), int_var);
FOO(int, int_var2);
In C, of course, this isn't necessa...
Is SecureRandom thread safe?
...s are using a single SecureRandom, there might be contention that hurts performance. On the other hand, initializing a SecureRandom instance can be relatively slow. Whether it is best to share a global RNG, or to create a new one for each thread will depend on your application. The ThreadLocalRandom...
Convert an integer to a float number
...le in GoLang.
In my program, I scan an integer i from the user input, perform a type conversion on it and store it in the variable f. The output prints the float64 equivalent of the int input. float32 datatype is also available in GoLang
Code:
package main
import "fmt"
func main() {
var i in...