大约有 36,010 项符合查询结果（耗时：0.0770秒） [XML]
A variable modified inside a while loop is not remembered
...
echo -e $lines | while read line
...
done
The while loop is executed in a subshell. So any changes you do to the variable will not be available once the subshell exits.
Instead you can use a here string to re-write the while loop to be in the main shell proce...
SQL Server loop - how do I loop through a set of records
how do I loop through a set of records from a select?
8 Answers
8
...
How to loop through array in jQuery?
...ns:
Generic loop:
var i;
for (i = 0; i < substr.length; ++i) {
// do something with `substr[i]`
}
or in ES2015+:
for (let i = 0; i < substr.length; ++i) {
// do something with `substr[i]`
}
Advantages: Straight-forward, no dependency on jQuery, easy to understand, no issues with...
How do I move a file with Ruby?
I want to move a file with Ruby. How do I do that?
6 Answers
6
...
What is the expected syntax for checking exception messages in MiniTest's assert_raises/must_raise?
...e assert_raises assertion, or the must_raise expectation.
it "must raise" do
assert_raises RuntimeError do
bar.do_it
end
-> { bar.do_it }.must_raise RuntimeError
lambda { bar.do_it }.must_raise RuntimeError
proc { bar.do_it }.must_raise RuntimeError
end
If you need to test...
How do I do a bulk insert in mySQL using node.js
How would one do a bulk insert into mySQL if using something like
https://github.com/felixge/node-mysql
12 Answers
...
How do I add an existing directory tree to a project in Visual Studio?
...dio, I create a directory structure for my project on the file system. How do I include all the folders and files in a project, keeping the structure?
...
Need to log asp.net webapi 2 request and response body to a database
...lers.Add(new LogRequestAndResponseHandler());
Here is the full Microsoft documentation for Message Handlers.
share
|
improve this answer
|
follow
|
...
Are getters and setters poor design? Contradictory advice seen [duplicate]
...ence being too closely coupled.
The idea is to make methods that directly do things you want to do. An example would be how to set enemies' "alive" status. You might be tempted to have a setAlive(boolean alive) method. Instead you should have:
private boolean alive = true;
public boolean isAlive()...
How do I prevent node.js from crashing? try-catch doesn't work
...end, but node.js just simply crashes. Surrounding my code with a try-catch doesn't work either since everything is done asynchronously. I would like to know what does everyone else do in their production servers.
...