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| Checks the existence of a chart in memory. |
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| Indicates whether a menu option exists in a menu. |
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| Allows you to find out whether a page context exists on the server (which means whether the page was opened). |
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| Determines whether an archive exists. |
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| Spécifie les dimensions du cube OLAP sur l'axe des Y... |
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| Toggles a class in the HTML classes of a control: if the class does not exist, it is added;... |
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| Modifies a key/value couple in the Memcached cache:
If the key exists, the value is modified.... |
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| Modifies a key/value couple in the Memcached cache on a group of servers:
If the key exists,... |
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| Checks if a socket already exists. |
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| Determines whether an archive exists. |
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| Checks the whether the matrix exists in memory. |
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| Indicates whether a menu option exists in a menu. |
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| Opens the xBase table and the "memo" file if it exists. |
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| Checks if a given file exists on an FTP server. |
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| Performs the following operations:
If the file does not exist, creates an empty data file... |
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| Performs the following operations:
If the file does not exist, creates an empty data file... |
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| Decrements the value associated with a key. The key is created if it does not exist. |
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