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Adding two Java 8 streams, or an extra element to a stream
... collect is a final operation that consumes all elements of the stream. On top of that, the collector concat creates an intermediate ArrayList each time it is used in the chain. Both operations can have a significant impact on the behaviour of your program. However, if readability is more important ...
How do I execute a string containing Python code in Python?
...l in Python is highly frowned upon.
There are better alternatives
From the top answer (emphasis mine):
For statements, use exec.
When you need the value of an expression, use eval.
However, the first step should be to ask yourself if you really need to. Executing code should generally be the positi...
How can I remove an SSH key?
... worked perfectly, summarizing for my version:
Click on Activities tab on top left corner
On the search box that comes up, begin typing "startup applications"
Click on the "Startup Applications" icon
On the box that pops up, select the gnome key ring manager application (can't remember the exact na...
How to draw a line in android
...
This one draws 2 lines which form a cross on the top left of the screen:
DrawView.java
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.View;
public class DrawView extends V...
How to check whether a string is a valid HTTP URL?
...n http and https. Just one line :)
if (Uri.IsWellFormedUriString("https://www.google.com", UriKind.Absolute))
MSDN: IsWellFormedUriString
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nginx 基础配置全攻略，入门这一篇就够了！ - 更多技术 - 清泛网 - 专注C/C...
...nginx 基础配置，包括ssl配置，http自动转https配置，自动加www的配置。
1、基础配置如下：
server {
listen 80;
listen [::]:80;
location / {
rewrite ^(.*)$ https://www.tsingfun.com$1 permanent;
}
}
server {
listen 443 ssl default_server;
listen [::]:44...
Best way to store time (hh:mm) in a database
...ers can be cut, but there are those where it is wiser not to
Although the top answer here suggests that you store an integer of minutes past midnight might seem perfectly reasonable, I have learned to avoid doing so the hard way.
The reasons to implement two DATETIME values are for an increase in ...
Get an object properties list in Objective-C
... Did you intend to have #import <Foundation/Foundation.h> at the top of the .h file?
– Andrew
Nov 7 '13 at 21:05
2
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Git rebase: conflicts keep blocking progress
...anch 'v4'
$ git rebase master
First, rewinding head to replay your work on top of it...
Applying: v4
Using index info to reconstruct a base tree...
Falling back to patching base and 3-way merge...
Auto-merging version.txt
CONFLICT (content): Merge conflict in version.txt
Recorded preimage for 'versi...
__FILE__ macro shows full path
...ber alone, use the __LINE__ macro.
For example, you can add this near the top of file.c:
#line __LINE__ "file.c"
The only problem with this is that it assigns the specified line number to the following line, and the first argument to #line has to be a digit-sequence so you can't do something lik...