How can i implement deadlines in smartContract?
Suppose I am running a gallery and ask participants to submit there paintings before a specific date. After passing that date participant should not be able to submit their entry. How can I implement such functionality?
solidity contract-development blockchain blocks timestamp
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Divansh SachdevaDivansh Sachdeva
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Suppose I am running a gallery and ask participants to submit there paintings before a specific date. After passing that date participant should not be able to submit their entry. How can I implement such functionality?
solidity contract-development blockchain blocks timestamp
edited yesterday
shane
1,8014730
asked yesterday
Divansh SachdevaDivansh Sachdeva
91
New contributor
Divansh Sachdeva is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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Suppose I am running a gallery and ask participants to submit there paintings before a specific date. After passing that date participant should not be able to submit their entry. How can I implement such functionality?
solidity contract-development blockchain blocks timestamp
edited yesterday
shane
1,8014730
asked yesterday
Divansh SachdevaDivansh Sachdeva
91
New contributor
Divansh Sachdeva is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Suppose I am running a gallery and ask participants to submit there paintings before a specific date. After passing that date participant should not be able to submit their entry. How can I implement such functionality?
solidity contract-development blockchain blocks timestamp
solidity contract-development blockchain blocks timestamp
edited yesterday
shane
1,8014730
asked yesterday
Divansh SachdevaDivansh Sachdeva
91
New contributor
Divansh Sachdeva is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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edited yesterday
shane
1,8014730
asked yesterday
Divansh SachdevaDivansh Sachdeva
91
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edited yesterday
shane
1,8014730
edited yesterday
shane
1,8014730
edited yesterday
shane
1,8014730
1,8014730
asked yesterday
Divansh SachdevaDivansh Sachdeva
91
New contributor
Divansh Sachdeva is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
Divansh SachdevaDivansh Sachdeva
91
asked yesterday
Divansh SachdevaDivansh Sachdeva
91
91
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Divansh Sachdeva is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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New contributor
Divansh Sachdeva is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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Divansh Sachdeva is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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1 Answer
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There are two ways to do this:
1) Limit the deadline by the block number.
require(block.number < 7169670); // Where 7169670 is a block number.
2) Limit the deadline by the current timestamp.
require(now < 1549219795); // Where 1549219795 is the current unix timestamp.
There are advantages for both. It is not recommended to use block.number for checks that are in a long time, as there is variance in timing of blocks and other factors such as the ice age.
now is preferred, as it is generally more accurate. With each mined block, miners include a timestamp of the current time. There are rules which limit their ability to manipulate this time (for example, it cannot be prior to the previous block's timestamp, nor can it be too much longer than it).
answered yesterday
shaneshane
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1 Answer
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oldest
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1 Answer
1
active
oldest
votes
active
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active
oldest
votes
There are two ways to do this:
1) Limit the deadline by the block number.
require(block.number < 7169670); // Where 7169670 is a block number.
2) Limit the deadline by the current timestamp.
require(now < 1549219795); // Where 1549219795 is the current unix timestamp.
There are advantages for both. It is not recommended to use block.number for checks that are in a long time, as there is variance in timing of blocks and other factors such as the ice age.
now is preferred, as it is generally more accurate. With each mined block, miners include a timestamp of the current time. There are rules which limit their ability to manipulate this time (for example, it cannot be prior to the previous block's timestamp, nor can it be too much longer than it).
answered yesterday
shaneshane
1,8014730
add a comment |
There are two ways to do this:
1) Limit the deadline by the block number.
require(block.number < 7169670); // Where 7169670 is a block number.
2) Limit the deadline by the current timestamp.
require(now < 1549219795); // Where 1549219795 is the current unix timestamp.
There are advantages for both. It is not recommended to use block.number for checks that are in a long time, as there is variance in timing of blocks and other factors such as the ice age.
now is preferred, as it is generally more accurate. With each mined block, miners include a timestamp of the current time. There are rules which limit their ability to manipulate this time (for example, it cannot be prior to the previous block's timestamp, nor can it be too much longer than it).
answered yesterday
shaneshane
1,8014730
add a comment |
There are two ways to do this:
1) Limit the deadline by the block number.
require(block.number < 7169670); // Where 7169670 is a block number.
2) Limit the deadline by the current timestamp.
require(now < 1549219795); // Where 1549219795 is the current unix timestamp.
There are advantages for both. It is not recommended to use block.number for checks that are in a long time, as there is variance in timing of blocks and other factors such as the ice age.
now is preferred, as it is generally more accurate. With each mined block, miners include a timestamp of the current time. There are rules which limit their ability to manipulate this time (for example, it cannot be prior to the previous block's timestamp, nor can it be too much longer than it).
answered yesterday
shaneshane
1,8014730
There are two ways to do this:
1) Limit the deadline by the block number.
require(block.number < 7169670); // Where 7169670 is a block number.
2) Limit the deadline by the current timestamp.
require(now < 1549219795); // Where 1549219795 is the current unix timestamp.
There are advantages for both. It is not recommended to use block.number for checks that are in a long time, as there is variance in timing of blocks and other factors such as the ice age.
now is preferred, as it is generally more accurate. With each mined block, miners include a timestamp of the current time. There are rules which limit their ability to manipulate this time (for example, it cannot be prior to the previous block's timestamp, nor can it be too much longer than it).
answered yesterday
shaneshane
1,8014730
answered yesterday
shaneshane
1,8014730
answered yesterday
shaneshane
1,8014730
answered yesterday
shaneshane
1,8014730
1,8014730
add a comment |
add a comment |
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