大约有 40,000 项符合查询结果（耗时：0.0404秒） [XML]
Create a string with n characters
...
The for loop will be optimized by the compiler. In such cases like yours you don't need to care about optimization on your own. Trust the compiler.
BTW, if there is a way to create a string with n space characters, than it's coded the same way like you just did.
...
How to load a tsv file into a Pandas DataFrame?
...
huonhuon
68.1k1212 gold badges181181 silver badges193193 bronze badges
...
How to get result of console.trace() as string in javascript with chrome or firefox?
... v8/chrome you can use a method on the Error constructor called captureStackTrace. (More info here)
So a hacky way to get it would be:
var getStackTrace = function() {
var obj = {};
Error.captureStackTrace(obj, getStackTrace);
return obj.stack;
};
console.log(getStackTrace());
Normally, g...
JavaScript and Threads
...
See http://caniuse.com/#search=worker for the most up-to-date support info.
The following was the state of support circa 2009.
The words you want to google for are JavaScript Worker Threads
Apart from from Gears there's nothing available right now, but t...
How can I scan barcodes on iOS?
...urce code is available from the zxing project; specifically, you want to take a look at the iPhone client and the partial C++ port of the core library. The port is a little old, from circa the 0.9 release of the Java code, but should still work reasonably well.
If you need to scan other formats, li...
django-debug-toolbar not showing up
I looked at other questions and can't figure it out...
26 Answers
26
...
nodejs how to read keystrokes from stdin
Is it possible to listen for incoming keystrokes in a running nodejs script?
If I use process.openStdin() and listen to its 'data' event then the input is buffered until the next newline, like so:
...
android studio 0.4.2: Gradle project sync failed error
...ect sync failed. Basic functionality (e.g. editing, debugging) will not work proprerly'
20 Answers
...
How do I escape a reserved word in Oracle?
In TSQL I could use something like Select [table] from tablename to select a column named "table".
5 Answers
...
How does @synchronized lock/unlock in Objective-C?
Does @synchronized not use "lock" and "unlock" to achieve mutual exclusion? How does it do lock/unlock then?
5 Answers
...