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Get data from fs.readFile
...way, rather it executes when the file loading has completed. When you call readFile, control is returned immediately and the next line of code is executed. So when you call console.log, your callback has not yet been invoked, and this content has not yet been set. Welcome to asynchronous programming...
Jackson enum Serializing and DeSerializer
...on 1.2)
@JsonCreator
public static Event forValue(String value) { ... }
Read more about JsonCreator annotation here.
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What is $@ in Bash? [duplicate]
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@vecvan number of questions before reading man bash: 1 ... number of questions after reading man bash: 12,031
– FloatingRock
Oct 29 '14 at 16:05
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libevent+protobuf轻松搭建tcpserver - C/C++ - 清泛网 - 专注C/C++及内核技术
...ent*)malloc(sizeof(struct event));
event_set(ev_accept, listen_fd, EV_READ|EV_PERSIST, on_accept, (void*)accept_param);
event_add(ev_accept, NULL);
return 0;
}
void on_accept(int fd, short ev, void *arg)
{
int client_fd = accept(fd, (struct sockaddr*)&client_addr, &client_l...
Is there a difference between copy initialization and direct initialization?
... that when the copy constructor is explicit, then the first one will fail. Read 8.6/14
double b1 = 0.5;
double b2(0.5);
This is doing the same because it's a built-in type (this means not a class type here). Read 8.6/14.
A c1;
A c2 = A();
A c3(A());
This is not doing the same. The first defau...
Java - sending HTTP parameters via POST method easily
...put("email", "fishie@seamail.example.com");
params.put("reply_to_thread", 10394);
params.put("message", "Shark attacks in Botany Bay have gotten out of control. We need more defensive dolphins to protect the schools here, but Mayor Porpoise is too busy stuffing his snout with lobster...
How to add a vertical Separator?
...curs after the layout pass when WPF is trying to render controls.
You can read more about the difference between LayoutTransform and RenderTransform here or here
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Why use getters and setters/accessors?
...ink?) allows you to define properties as 1st class citizens where they can read / write a field directly initially but - should you need it - do so via getter / setter methods as well. Mucho convenient. Java, alas, does not - not to mention the javabeans standard which forces you to use getters / se...
Should services always return DTOs, or can they also return domain models?
...o, in which case the answer is that they should not return DTOs. I suggest reading chapter 4 in the blue book, titled "Isolating the Domain".
In that chapter, Evans says the following about the layers:
Partition a complex program into layers. Develop a design within each layer that is cohesive ...
How to enter a multi-line command
...ost in documentation or websites, for fear that the command will either be read wrong by a human if using Shift+Enter, or parsed wrong in ISE's command line when using the back tick.
– GuitarPicker
Oct 26 '17 at 21:26
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