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How to fix “Headers already sent” error in PHP
When running my script, I am getting several errors like this:
11 Answers
11
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Nginx缓存解决方案：SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术
...;
lua_package_path '/path/to/phoenix/include/?.lua;/path/to/phoenix/vendor/?.lua;;';
init_by_lua_file /path/to/phoenix/config.lua;
server {
listen 80;
server_name foo.com;
root /path/to/root;
index index.html index.htm index.php;
location / {
try_fi...
Determine if Python is running inside virtualenv
...
The most reliable way to check for this is to check whether sys.prefix == sys.base_prefix. If they are equal, you are not in a virtual environment; if they are unequal, you are. Inside a virtual environment, sys.prefix points to the virtual environment, and...
MongoDB aggregation framework match OR
Is it possible to do an OR in the $match?
2 Answers
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How does Java handle integer underflows and overflows and how would you check for it?
...back to the maximum value and continues from there.
You can check that beforehand as follows:
public static boolean willAdditionOverflow(int left, int right) {
if (right < 0 && right != Integer.MIN_VALUE) {
return willSubtractionOverflow(left, -right);
} else {
r...
Difference between “and” and && in Ruby?
What is the difference between the && and and operators in Ruby?
7 Answers
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static allocation in java - heap, stack and permanent generation
I have been lately reading a lot on memory allocation schemes in java, and there have been many doubts as I have been reading from various sources. I have collected my concepts, and I would request to go through all of the points and comment on them. I came to know that memory allocation is JVM spec...
Why doesn't java.util.Set have get(int index)?
...e please explain why the java.util.Set interface lacks get(int Index) , or any similar get() method?
18 Answers
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Checking for empty arrays: count vs empty
...ould use count really - If the array is large then count takes longer/has more overhead. If you simply need to know whether or not the array is empty then use empty.
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Regular expression for floating point numbers
...h floating point numbers. I have written the following regular expression for it:
12 Answers
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