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	Remove Multi-dimensional array FAQ
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				| @ -94,23 +94,6 @@ The key point is that the calling contract needs to know about the function it i | |||||||
| See `ping.sol <https://github.com/fivedogit/solidity-baby-steps/blob/master/contracts/45_ping.sol>`_ | See `ping.sol <https://github.com/fivedogit/solidity-baby-steps/blob/master/contracts/45_ping.sol>`_ | ||||||
| and `pong.sol <https://github.com/fivedogit/solidity-baby-steps/blob/master/contracts/45_pong.sol>`_. | and `pong.sol <https://github.com/fivedogit/solidity-baby-steps/blob/master/contracts/45_pong.sol>`_. | ||||||
| 
 | 
 | ||||||
| How do you create 2-dimensional arrays? |  | ||||||
| ======================================= |  | ||||||
| 
 |  | ||||||
| See `2D_array.sol <https://github.com/fivedogit/solidity-baby-steps/blob/master/contracts/55_2D_array.sol>`_. |  | ||||||
| 
 |  | ||||||
| Note that filling a 10x10 square of ``uint8`` + contract creation took more than ``800,000`` |  | ||||||
| gas at the time of this writing. 17x17 took ``2,000,000`` gas. With the limit at |  | ||||||
| 3.14 million... well, there’s a pretty low ceiling for what you can create right |  | ||||||
| now. |  | ||||||
| 
 |  | ||||||
| Note that merely "creating" the array is free, the costs are in filling it. |  | ||||||
| 
 |  | ||||||
| Note2: Optimizing storage access can pull the gas costs down considerably, because |  | ||||||
| 32 ``uint8`` values can be stored in a single slot. The problem is that these optimizations |  | ||||||
| currently do not work across loops and also have a problem with bounds checking. |  | ||||||
| You might get much better results in the future, though. |  | ||||||
| 
 |  | ||||||
| How do I initialize a contract with only a specific amount of wei? | How do I initialize a contract with only a specific amount of wei? | ||||||
| ================================================================== | ================================================================== | ||||||
| 
 | 
 | ||||||
|  | |||||||
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