大约有 19,601 项符合查询结果（耗时：0.0421秒） [XML]
RabbitMQ and relationship between channel and connection
... is doing something similar to what I programmed my client to do (mine was based off the .Net client, but heavily modified).
share
|
improve this answer
|
follow
...
How to get hex color value rather than RGB value?
...
Here is the cleaner solution I wrote based on @Matt suggestion:
function rgb2hex(rgb) {
rgb = rgb.match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);
function hex(x) {
return ("0" + parseInt(x).toString(16)).slice(-2);
}
return "#" + hex(rgb[1]) ...
Why can Java Collections not directly store Primitives types?
...sues: relatively efficient access would require keeping both arrays sorted based on the key order to allow binary searching, which in turn would make insertion and deletion inefficient unless the insertion/deletion is patterned such that inserted items are likely to end up where a previously deleted...
Why avoid increment (“++”) and decrement (“--”) operators in JavaScript?
...operation. push is array[++i] = foo, pop is bar = array[i--]. (But with 0-based arrays, array[i++] = foo and bar = array[--i] look still better). Another thing, I would hate it if someone added extra code between i++; and array[i] = foo;.
– Florian F
Jun 22 '...
json.net has key method?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
Draft saved
Draft discarded
...
How can I automatically deploy my app after a git push ( GitHub and node.js)?
...
I just published a node-based solution to your problem: node-cd
It consists in a simple node app running on your VPS that will receive Github post-receive Hooks and execute a the script you like (for example a shell script that will kill your app, ...
Getting error: Peer authentication failed for user “postgres”, when trying to get pgsql working with
...erating system user name from the kernel and using it as the allowed
database user name (with optional user name mapping). This method is
only supported on local connections.
Password authentication
The password-based authentication methods are md5 and password. These
methods operate sim...
Why do most C developers use define instead of const? [duplicate]
...the preprocessor: you can use it with #ifdef to do conditional compilation based on its value, or use the stringizing operator # to get a string with its value. And as the compiler knows its value at compile time it may optimize code based on that value.
For example:
#define SCALE 1
...
scaled_x...
How do I test for an empty string in a Bash case statement?
I have a Bash script that performs actions based on the value of a variable. The general syntax of the case statement is:
3...
Aggregate / summarize multiple variables per group (e.g. sum, mean)
...('.*[0-9]')), sum)
# summarising a specific set of non-grouping variables based on condition (class)
df2 <- df1 %>% group_by(year, month) %>% summarise_if(is.numeric, sum)
The result of the latter two options:
year month x1 x2
<dbl> <dbl> <dbl>...