大约有 36,010 项符合查询结果（耗时：0.0306秒） [XML]
Optimal number of threads per core
...
If your threads don't do I/O, synchronization, etc., and there's nothing else running, 1 thread per core will get you the best performance. However that very likely not the case. Adding more threads usually helps, but after some point, they ...
What does “:=” do?
... their assignment operator. Languages making the latter choice often use a double equals sign (==) to denote their boolean equality operator.
Note: I found this by searching for colon equals operator
share
|
...
What is unit testing? [closed]
...te that if your test code writes to a file, opens a database connection or does something over the network, it's more appropriately categorized as an integration test. Integration tests are a good thing, but should not be confused with unit tests. Unit test code should be short, sweet and quick to e...
How do I get textual contents from BLOB in Oracle SQL
...
Unfortunately, I do not control the database schema - I just need to peek into the blob... But thanks anyway.
– Roland Tepp
May 7 '09 at 6:32
...
Why do we usually use || over |? What is the difference?
...
| does not do short-circuit evaluation in boolean expressions. || will stop evaluating if the first operand is true, but | won't.
In addition, | can be used to perform the bitwise-OR operation on byte/short/int/long values. ||...
What do people think of the fossil DVCS? [closed]
...
Mr. Millikin, if you will take a few moments to review some of the documentation on fossil, I think your objections are addressed there. Storing a repository in an sQLite database is arguably safer than any other approach. See link text for some of the advantages of using a transactional d...
How do I detect the Python version at runtime? [duplicate]
...
Don't check the value of sys.version. Only use it for displaying purposes.
– iBug
Sep 17 '18 at 1:58
6
...
How can I list all collections in the MongoDB shell?
In the MongoDB shell, how do I list all collections for the current database that I'm using?
22 Answers
...
How do I loop through or enumerate a JavaScript object?
... to make sure that the key you get is an actual property of an object, and doesn't come from the prototype.
Here is the snippet:
var p = {
"p1": "value1",
"p2": "value2",
"p3": "value3"
};
for (var key in p) {
if (p.hasOwnProperty(key)) {
console.log(key + " -&g...
Undo part of unstaged changes in git
How do I undo parts of my unstaged changes in git but keep the rest as unstaged? The way I figured out is:
7 Answers
...