大约有 42,000 项符合查询结果（耗时：0.0426秒） [XML]
Scala @ operator
... specifically, though I don't know where the "as usual" there came from -- and 8.12 only speak of regular expression pattern (_*). But maybe this has been clarified on a newer version of the spec.
– Daniel C. Sobral
Mar 2 '10 at 22:58
...
Kotlin Ternary Conditional Operator
... code is equivalent:
if (a) b else c
The distinction between expression and statement is important here. In Java/C#/JavaScript, if forms a statement, meaning that it does not resolve to a value. More concretely, you can't assign it to a variable.
// Valid Kotlin, but invalid Java/C#/JavaScript
v...
How to locate the git config file in Mac [duplicate]
...HOME/.gitconfig on all platforms.
However, you can simply open a terminal and execute git config, which will write the appropriate changes to this file. You shouldn't need to manually tweak .gitconfig, unless you particularly want to.
...
Rails.env vs RAILS_ENV
... what env one is running in. What's preferred? Are they, for all intents and purposes equal?
5 Answers
...
Python loop counter in a for loop [duplicate]
...ted to loop counters, but they were either deferred or rejected ( PEP 212 and PEP 281 ).
4 Answers
...
How can I copy data from one column to another in the same table?
... This will also work if you want to transfer old value to other column and update the first one: UPDATE table SET columnA = 'new value', columnB = columnA. Like other answer says - don't forget the WHERE clause to update only what's needed.
– Carl di Ortus
...
Get jQuery version from inspecting the jQuery object
...ecting the jQuery object? jQuery is dynamically getting added to my page and I cannot see any reference to it in my markup. If I inspect it in my browser's console, it's there.
...
Any shortcut to initialize all array elements to zero?
...ger[0]);
Would give arr the value:
[42, 42, 42]
(though it's Integer, and not int, if you need the primitive type you could defer to the Apache Commons ArrayUtils.toPrimitive() routine:
int [] primarr = ArrayUtils.toPrimitive(arr);
...
Print a file's last modified date in Bash
...
You can use the
stat
command
stat -c %y "$entry"
More info
%y time of last modification, human-readable
share
|
improve this answer
...
git: fatal: Could not read from remote repository
...key had been "removed". so ssh-add ~/.ssh/theKeyInQuestion got me back up and running with this repo, didnt know the key removed, or what "removed" even means but at least I was able to get authenticated again. SSH is a total mystery to me even after months of dealing with authentication issues. s...