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Why does cURL return error “(23) Failed writing body”?
...
This happens when a piped program (e.g. grep) closes the read pipe before the previous program is finished writing the whole page.
In curl "url" | grep -qs foo, as soon as grep has what it wants it will close the read stream from curl. cURL doesn't expect this and emits the "Faile...
In-Place Radix Sort
... the temporary array fits into memory.
Reason:
The sorting does a linear read on the input array, but all writes will be nearly random. From a certain N upwards this boils down to a cache miss per write. This cache miss is what slows down your algorithm. If it's in place or not will not change thi...
What does the property “Nonatomic” mean?
...omic, and you generate the accessors using @synthesize, then if multiple threads try to change/read the property at once, badness can happen. You can get partially-written values or over-released/retained objects, which can easily lead to crashes. (This is potentially a lot faster than an atomic acc...
How can I add to List
... object is allowed in that List. The only "guarantee" is that you can only read from it and you'll get a T or subclass of T.
The reverse logic applies to super, e.g. List<? super T>. These are legal:
List<? super Number> foo3 = new ArrayList<Number>; // Number is a "super" of Num...
Python import csv to list
...g the csv module:
import csv
with open('file.csv', newline='') as f:
reader = csv.reader(f)
data = list(reader)
print(data)
Output:
[['This is the first line', 'Line1'], ['This is the second line', 'Line2'], ['This is the third line', 'Line3']]
If you need tuples:
import csv
with...
Using scanner.nextLine() [duplicate]
...
I think your problem is that
int selection = scanner.nextInt();
reads just the number, not the end of line or anything after the number. When you declare
String sentence = scanner.nextLine();
This reads the remainder of the line with the number on it (with nothing after the number I s...
8 种提升 ASP.NET Web API 性能的方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... 一测试数据可参见他们的GitHub page Jil serializer.
2)从DataReader中手动串行化JSON
我已经在我的项目中使用过这种方法，并获得了在性能上的福利。
你可以手动地从DataReader创建JSON字符串并避免不必要的对象创建，这样你就不用...
虚拟机安装CentOS出错：EDD:Error 8000 reading sector 2106934 - 环境配置...
EDD:Error 8000 reading sector 2106934
No DEFAULT or UI configuration directive found!
boot:
Getting closer!
When i start to install every thing seem to be fine.
1.Select language k
2.select location k
3.configure keyboard k
4.network config k
then it gets stuck on a purple screen with n...
Should I use past or present tense in git commit messages? [closed]
I read once that git commit messages should be in the imperative present tense, e.g. "Add tests for x". I always find myself using the past tense, e.g. "Added tests for x" though, which feels a lot more natural to me.
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UTF-8 byte[] to String
Let's suppose I have just used a BufferedInputStream to read the bytes of a UTF-8 encoded text file into a byte array. I know that I can use the following routine to convert the bytes to a string, but is there a more efficient/smarter way of doing this than just iterating through the bytes and con...