大约有 47,000 项符合查询结果(耗时:0.0690秒) [XML]

https://stackoverflow.com/ques... 

Grepping a huge file (80GB) any way to speed it up?

... Here are a few options: 1) Prefix your grep command with LC_ALL=C to use the C locale instead of UTF-8. 2) Use fgrep because you're searching for a fixed string, not a regular expression. 3) Remove the -i option, if you don't need it. So your command becomes: LC_ALL=C fgrep -A 5 -...
https://stackoverflow.com/ques... 

Eclipse - “Workspace in use or cannot be created, chose a different one.” [duplicate]

...t the .metadata folder in my workspace I removed it from terminal and it really worked thanks..... – Karthika PB Apr 1 '15 at 12:41 1 ...
https://stackoverflow.com/ques... 

Check if EditText is empty. [closed]

...users to input. I would like to know if I could have a method for checking all the 5 EditTexts if they are null. Is there any way to do this?? ...
https://stackoverflow.com/ques... 

Difference between partition key, composite key and clustering key in Cassandra?

... In a situation of COMPOSITE primary key, the "first part" of the key is called PARTITION KEY (in this example key_part_one is the partition key) and the second part of the key is the CLUSTERING KEY (in this example key_part_two) Please note that the both partition and clustering key can be made b...
https://stackoverflow.com/ques... 

How to test valid UUID/GUID?

...9a-f]{3}-[089ab][0-9a-f]{3}-[0-9a-f]{12}$/i ...ensures you have a canonically formatted UUID that is Version 1 through 5 and is the appropriate Variant as per RFC4122. NOTE: Braces { and } are not canonical. They are an artifact of some systems and usages. Easy to modify the above regex to meet ...
https://stackoverflow.com/ques... 

Why must a nonlinear activation function be used in a backpropagation neural network? [closed]

...ion function is to introduce non-linearity into the network in turn, this allows you to model a response variable (aka target variable, class label, or score) that varies non-linearly with its explanatory variables non-linear means that the output cannot be reproduced from a linear combination of ...
https://stackoverflow.com/ques... 

What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?

...ey are exact representations of the image. Bitmap formats such as BMP generally are uncompressed, although there also are compressed BMP files as well. Lossy compression formats are generally suited for photographs. It is not suited for illustrations, drawings and text, as compression artifacts fro...
https://stackoverflow.com/ques... 

Is it possible to run one logrotate check manually?

Is it possible to run one iteration of logrotate manually without scheduling it on some interval? 8 Answers ...
https://stackoverflow.com/ques... 

What is state-of-the-art for text rendering in OpenGL as of version 4.1? [closed]

...map-textured quad, and evaluating curves in the shader is still computationally much more expensive than necessary. The best trade-off between "fast" and "quality" are still textured quads with a signed distance field texture. It is very slightly slower than using a plain normal textured quad, but ...
https://stackoverflow.com/ques... 

Automatically create an Enum based on values in a database lookup table?

How do I automatically create an enum and subsequently use its values in C# based on values in a database lookup table (using enterprise library data layer)? ...