Category: default

Original title: 885. Spiral Matrix III On a 2 dimensional grid with R rows and C columns, we start at (r0, c0) facing east. Here, the north-west corner of the grid is at the first row and column, and the south-east corner of the grid is at the last row and column. Now, we walk in a clockwise spiral shape to visit every position in this grid. Whenever we would move outside the boundary of the grid, we continue our walk outside the grid (but may return to the grid boundary later.) Eventually, we reach all R * C spaces of the grid. Return a list of coordinates representing the positions of the ...

1)Why Dapper? 　　 EFThe cost of learning is so high that I’ve studied it for a long time, but I still don’t know how to update it to the database after updating the class.         Linq to sqlThis is not bad, but the problem is that if you connect to Mysql, you will die.         Just read this article & lt; & lt; five years later, why should we move from the Entity Framework to the Dapper Tool & gt; & gt; & gt;, and think we can try it.          Basic operation tutorial here, < < Dapper learning notes > > this blogger has only on...

Potentiometers are often used for parameter calibration, such as adjustable power supply, amplifier gain regulation, adjustable filter, LCD backlight regulation, noise-free adjustment of sound, etc. There are mechanical and digital types. Mechanical advantages are: fixed after power on, high voltage and high current resistance, but poor temperature characteristics, greatly affected by mechanical vibration Electronic: digital control can be changed, good stability, good temperature characteristics, the shortcomings are narrow voltage and current range, narrow bandwidth. The output range and cu...

Transfer: http://www.cnblogs.com/waterystone/p/4920797.html First, an overview 　　When it comes to concurrency, you have to talk about ReentrantLock; when it comes to ReentrantLock, you have to talk about AbstractQueued Synchronizer (AQS)! 　　Class is its name.Abstract queue synchronizer，AQSA set of definitions is defined.Multithreaded access to shared resourcesSynchronizer framework，Many synchronous class implementations rely on it.，Such as commonly used ReentrantLock/Semaphore/CountDownLatch…。 　　What is thread synchronization?：Thread synchronization refers to multi...

After we train the model with keras, we usually save the model format type as hdf5, that is. H5 file. But if we want to migrate to the mobile end, especially the one supported by tensorflow, we need to convert it to tflite. How to convert? In tensorflow1.9 and above versions, it is convenient to convert by command line. tflite_convert --output_file=/home/yourname/Documents/tensorflow/images/500pics2/model/my_model.tflite --keras_model_file=/home/yourname/Documents/tensorflow/images/500pics2/model/my_model.h5 Other options are available at https://github.com/tensorflow/tensorflow/blob/master...