大约有 40,000 项符合查询结果（耗时：0.0367秒） [XML]
How do I catch an Ajax query post error?
...
By the way there is also responseJSON property which is also very handy in case of ajax type is json.
– ivkremer
Apr 15 '15 at 16:06
...
check if a std::vector contains a certain object? [duplicate]
...black trees, which have a significant overhead. I don't know what you mean by a header adding overhead. Overhead usually refers to runtime overhead. The best use cases of set are "I'm feeling lazy and don't want to think about it," and "I need to get this done quickly." If you care about performance...
Printing the last column of a line in a file
...record containing A1 and thus you get no output at all. This may be solved by switching tail and awk, searching first through the file and only then show the last line:
awk '/A1/ {print $NF}' file | tail -n1
share
...
send mail from linux terminal in one line [closed]
... "The program 'mail' is currently not installed. You can install it by typing: apt-get install mailutils"
– Tom
Feb 1 '16 at 3:09
...
How to reverse a 'rails generate'
... model/controller/migration ... to destroy or remove the changes generated by using the rails generate command.
For example:
rails g model Home name:string
creates a model named home with attribute name. To remove the files and code generated from that command we can use
rails d model Home
...
Why does ('0' ? 'a' : 'b') behave different than ('0' == true ? 'a' : 'b') [duplicate]
...eated as FALSE in this case
('0' == true ? 'a' : 'b') --> as mentioned by others some_string compared to boolean TRUE is NOT TRUE
share
|
improve this answer
|
follow
...
Command to collapse all sections of code?
...
In Visual Studio 2017, It seems that this behavior is turned off by default. It can be enabled under Tools > Options > Text Editors > C# > Advanced > Outlining > "Collapse #regions when collapsing to definitions"
...
Verifying that a string contains only letters in C#
...
The answer provided by Muhammad Hasan Khan further down is worth looking at too. RegEx text comparison is slow.
– twoleggedhorse
Jul 17 at 15:01
...
Animation CSS3: display + opacity
...
There is another good method to get this done by using pointer-events:
.child {
opacity: 0;
pointer-events: none;
-webkit-transition: opacity 0.5s ease-in-out;
-moz-transition: opacity 0.5s ease-in-out;
transition: opacity 0.5s ease-in-out;
}
.pare...
How to activate virtualenv?
...our environment is strange or it will cause you pain again in the future.)
By the way, you didn't need to chmod +x those files. Files only need to be executable if you want to execute them directly. In this case you're trying to launch them from ., so they don't need it.
...