大约有 14,600 项符合查询结果（耗时：0.0462秒） [XML]
Why does running the Flask dev server run itself twice?
...
The Werkzeug reloader spawns a child process so that it can restart that process each time your code changes. Werkzeug is the library that supplies Flask with the development server when you call app.run().
See the restart_with_reloader() function code; your script is run again with su...
How to implement an STL-style iterator and avoid common pitfalls?
...rial on implementing iterators for a linked list. Could you use that as a starting point for building a random-access iterator over your container?
If nothing else, you can take a look at the member functions and typedefs provided by iterator_facade and use it as a starting point for building your...
Using an ORM or plain SQL? [closed]
...e how I distinguish DAL from ORM:
A DAL is what you write yourself, maybe starting from a class that simply encapsulates a table and maps its fields to properties. An ORM is code you don't write or abstraction mechanisms inferred from other properties of your dbms schema, mostly PKs and FKs. (This ...
C# Events and Thread Safety
... delegate has 1000 entries. It's perfectly possible that the action at the start of the list will have executed before another thread unsubscribes a handler near the end of the list. However, that handler will still be executed because it'll be a new list. (Delegates are immutable.) As far as I can ...
Fastest exit strategy for a Panic Button in Crisis/Abuse Websites? [closed]
...Google tab so that no one was the wiser. It worked...sort of. Until people started to question why I was staring at the Google search screen all day.
I've since started opening a tab with various work projects in different states. Usually, stuff I'm working on anyways in between browsing. So, now I'...
Is it expensive to use try-catch blocks even if an exception is never thrown?
...duration;
do {
i = nextI;
long start = System.nanoTime();
run(i);
duration = System.nanoTime() - start;
nextI = (i << 1) | 1;
} while (duration < 100000000 && nextI > 0);
...
Do HTML WebSockets maintain an open connection for each client? Does this scale?
... be sent back and forth.
Typically, HTTP servers are configured to log the start and completion of every HTTP request taking up disk and CPU time. It will become standard to log the start and completion of WebSockets data, but while the WebSockets connection doing duplex transfer there won't be any ...
How to wrap async function calls into a sync function in Node.js or Javascript?
...n AnticipatedSyncFunction(){ var ret; setTimeout(function(){ var startdate = new Date() //console.log(startdate) ret = "hello" + startdate; },3000); while(ret === undefined) { require('deasync').runLoopOnce(); } return ret; } var output = AnticipatedSyncFunction(); ...
Why does CSS not support negative padding?
... is a case where the spec goes beyond telling me how to define my page and starts telling me how I should define my page. If I want my content to overlap my background edges, borders and/or margins, that should be my prerogative, the spec definers' imaginations of why I might want to do so notwiths...
Java SE 6 vs. JRE 1.6 vs. JDK 1.6 - What do these mean?
...a for development):
Java SE 7
Java SE v1.7.0
Java SE Development Kit 7
Starting with Java v1.5:
v5 = v1.5.
v6 = v1.6.
v7 = v1.7.
And we can assume this will remain for future versions.
Next, for developers, download JDK, not JRE.
JDK will contain JRE. If you need JDK and JRE, get JDK. Both...