大约有 30,000 项符合查询结果（耗时：0.0270秒） [XML]
Do try/catch blocks hurt performance when exceptions are not thrown?
...
This is not true at all, Think of it. How many times that you use try catch in a loop? Most of the time you will use loop in a try.c
– Athiwat Chunlakhan
Aug 29 '09 at 20:10
...
Print “hello world” every X seconds
...
You can also take a look at Timer and TimerTask classes which you can use to schedule your task to run every n seconds.
You need a class that extends TimerTask and override the public void run() method, which will be executed everytime you pass an inst...
What is the best way to do a substring in a batch file?
... - expands %I to file attributes of file
%~tI - expands %I to date/time of file
%~zI - expands %I to size of file
%~$PATH:I - searches the directories listed in the PATH
environment variable and expands %I to the
fully qualified name of the first one fo...
How I can I lazily read multiple JSON values from a file/stream in Python?
... like to read multiple JSON objects from a file/stream in Python, one at a time. Unfortunately json.load() just .read() s until end-of-file; there doesn't seem to be any way to use it to read a single object or to lazily iterate over the objects.
...
In Python, how do I read the exif data for an image?
...d:
return v
exif = image._getexif()
print get_field(exif,'ExposureTime')
share
|
improve this answer
|
follow
|
...
How to remove new line characters from a string?
...\t", String.Empty);
Or if we need to apply the same replacement multiple times, it is better to use a compiled version for the Regex like
var regex = new Regex(@"\r\n?|\n|\t", RegexOptions.Compiled);
string result = regex.Replace(s, String.Empty);
NOTE: different scenarios requite different ap...
Changing the resolution of a VNC session in linux [closed]
...200 it doesn't fit on the laptop's screen, and I have to scroll it all the time.
15 Answers
...
How to compare objects by multiple fields
...t comparison methods that are not a function of the data itself - i.e. sometimes you want to compare by name, other times by age, etc. To compare by multiple fields at the same time, only one comparator would be necessary.
– Elie
Nov 13 '14 at 17:13
...
Differences between Perl and PHP [closed]
...No boring error log peeks.
Easy to learn. No boring book reading.
As the time passed, everyone learned that they were not a benefit, hehe...
share
|
improve this answer
|
f...
Split a List into smaller lists of N size
... Before you use this in production, make sure you understand what the run-time implications for memory and performance are. Just because LINQ can be succinct, doesn't mean it's a good idea.
– Nick
Jun 19 '17 at 21:11
...