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python max function using 'key' and lambda expression
...function, it is equivalent to:
def func(p):
return p.totalScore
Now max becomes:
max(players, key=func)
But as def statements are compound statements they can't be used where an expression is required, that's why sometimes lambda's are used.
Note that lambda is equivalent to what you...
Eclipse, where to change the current debug line background?
...
Ok, now I found it myself (through major reverse engineering). It is in General\Editors\Text Editors\Annotations page. It's called "Debug Current Instruction Pointer"
...
Invalid syntax when using “print”? [duplicate]
... have replaced the print statement with the print function.
The syntax is now more or less the same as before, but it requires parens:
From the "what's new in python 3" docs:
Old: print "The answer is", 2*2
New: print("The answer is", 2*2)
Old: print x, # Trailing comma suppresses newl...
Are nested transactions allowed in MySQL?
... @Quassnoi the link I provided was to show that nested transactions are now supported. Now, savepoints are powerful, but they're not the same as nested BEGIN,COMMIT/ROLLBACK (programatically speaking, command-wise) although you seem pretty sure that in a "single-threaded context" they're equivale...
Display element as preformatted text via CSS [duplicate]
...
How do you guys know about this stuff? I spent some time barking up the wrong tree (display) but never thought to look at white-space.
– Dagg Nabbit
Mar 17 '12 at 21:02
...
putting current class as return type annotation [duplicate]
...
So now after a while I can say that decision I took was using -> 'Graph' instead of -> Graph. It does not make my IDE (PyCharm) able to recognize a type this way but it just works well enough for documentation purposes.
A...
App Inventor 2 文件操作教程 - 创建/读取/写入/管理文件 · App Inventor 2 中文网
..._追加.Click() {
var 时间戳 = 计时器1.FormatDateTime(计时器1.Now(), "yyyy-MM-dd HH:mm:ss")
var 追加内容 = join(时间戳, ": ", 文本输入框_内容.Text, "\n")
文件管理器1.AppendToFile(追加内容, "/sdcard/MyApp/log.txt")
}
写入JSON数据
whe...
How to fix SSL certificate error when running Npm on Windows?
...Y & HTTPS_PROXY are environment variables used by lots of software to know where your proxy is. Under Windows, lots of software also uses your OS specified proxy which is a totally different thing. That means you can have Chrome (which uses the proxy specified in your Internet Options) connectin...
How does HTTP file upload work?
... uploaded file determined by browser?
application/x-www-form-urlencoded
Now change the enctype to application/x-www-form-urlencoded, reload the browser, and resubmit.
Firefox sent:
POST / HTTP/1.1
[[ Less interesting headers ... ]]
Content-Type: application/x-www-form-urlencoded
Content-Length:...
vim, switching between files rapidly using vanilla Vim (no plugins)
... "any subdirectory" in combination with :e but I'll be using it a lot from now on. I marvel at the work that got into Ctrl-P and can learn a lot from it but it didn't work for me. I found it to be a bit slugish and as such interrupting my train of thought while working (could be my system, my settin...