Sophie: ocaml-3.12.1-1ark i586

ocaml-3.12.1-1ark.i586.rpm

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<link title="Weak" rel="Chapter" href="Weak.html"><title>Dbm</title>
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<center><h1>Module <a href="type_Dbm.html">Dbm</a></h1></center>
<br>
<pre><span class="keyword">module</span> Dbm: <code class="code"><span class="keyword">sig</span></code> <a href="Dbm.html">..</a> <code class="code"><span class="keyword">end</span></code></pre>Interface to the NDBM database.<br>
<hr width="100%">
<pre><span id="TYPEt"><span class="keyword">type</span> <code class="type"></code>t</span> </pre>
<div class="info">
The type of file descriptors opened on NDBM databases.<br>
</div>

<br><code><span id="TYPEopen_flag"><span class="keyword">type</span> <code class="type"></code>open_flag</span> = </code><table class="typetable">
<tr>
<td align="left" valign="top" >
<code><span class="keyword">|</span></code></td>
<td align="left" valign="top" >
<code><span class="constructor">Dbm_rdonly</span></code></td>

</tr>
<tr>
<td align="left" valign="top" >
<code><span class="keyword">|</span></code></td>
<td align="left" valign="top" >
<code><span class="constructor">Dbm_wronly</span></code></td>

</tr>
<tr>
<td align="left" valign="top" >
<code><span class="keyword">|</span></code></td>
<td align="left" valign="top" >
<code><span class="constructor">Dbm_rdwr</span></code></td>

</tr>
<tr>
<td align="left" valign="top" >
<code><span class="keyword">|</span></code></td>
<td align="left" valign="top" >
<code><span class="constructor">Dbm_create</span></code></td>
<td class="typefieldcomment" align="left" valign="top" ><code>(*</code></td><td class="typefieldcomment" align="left" valign="top" >Flags for opening a database (see <a href="Dbm.html#VALopendbm"><code class="code"><span class="constructor">Dbm</span>.opendbm</code></a>).</td><td class="typefieldcomment" align="left" valign="bottom" ><code>*)</code></td>
</tr></table>


<pre><span id="EXCEPTIONDbm_error"><span class="keyword">exception</span> Dbm_error</span> <span class="keyword">of</span> <code class="type">string</code></pre>
<div class="info">
Raised by the following functions when an error is encountered.<br>
</div>
<pre><span id="VALopendbm"><span class="keyword">val</span> opendbm</span> : <code class="type">string -> <a href="Dbm.html#TYPEopen_flag">open_flag</a> list -> int -> <a href="Dbm.html#TYPEt">t</a></code></pre><div class="info">
Open a descriptor on an NDBM database. The first argument is
   the name of the database (without the <code class="code">.dir</code> and <code class="code">.pag</code> suffixes).
   The second argument is a list of flags: <code class="code"><span class="constructor">Dbm_rdonly</span></code> opens
   the database for reading only, <code class="code"><span class="constructor">Dbm_wronly</span></code> for writing only,
   <code class="code"><span class="constructor">Dbm_rdwr</span></code> for reading and writing; <code class="code"><span class="constructor">Dbm_create</span></code> causes the
   database to be created if it does not already exist.
   The third argument is the permissions to give to the database
   files, if the database is created.<br>
</div>
<pre><span id="VALclose"><span class="keyword">val</span> close</span> : <code class="type"><a href="Dbm.html#TYPEt">t</a> -> unit</code></pre><div class="info">
Close the given descriptor.<br>
</div>
<pre><span id="VALfind"><span class="keyword">val</span> find</span> : <code class="type"><a href="Dbm.html#TYPEt">t</a> -> string -> string</code></pre><div class="info">
<code class="code">find db key</code> returns the data associated with the given
   <code class="code">key</code> in the database opened for the descriptor <code class="code">db</code>.
   Raise <code class="code"><span class="constructor">Not_found</span></code> if the <code class="code">key</code> has no associated data.<br>
</div>
<pre><span id="VALadd"><span class="keyword">val</span> add</span> : <code class="type"><a href="Dbm.html#TYPEt">t</a> -> string -> string -> unit</code></pre><div class="info">
<code class="code">add db key data</code> inserts the pair (<code class="code">key</code>, <code class="code">data</code>) in
   the database <code class="code">db</code>. If the database already contains data
   associated with <code class="code">key</code>, raise <code class="code"><span class="constructor">Dbm_error</span> <span class="string">"Entry already exists"</span></code>.<br>
</div>
<pre><span id="VALreplace"><span class="keyword">val</span> replace</span> : <code class="type"><a href="Dbm.html#TYPEt">t</a> -> string -> string -> unit</code></pre><div class="info">
<code class="code">replace db key data</code> inserts the pair (<code class="code">key</code>, <code class="code">data</code>) in
   the database <code class="code">db</code>. If the database already contains data
   associated with <code class="code">key</code>, that data is discarded and silently
   replaced by the new <code class="code">data</code>.<br>
</div>
<pre><span id="VALremove"><span class="keyword">val</span> remove</span> : <code class="type"><a href="Dbm.html#TYPEt">t</a> -> string -> unit</code></pre><div class="info">
<code class="code">remove db key data</code> removes the data associated with <code class="code">key</code>
   in <code class="code">db</code>. If <code class="code">key</code> has no associated data, raise
   <code class="code"><span class="constructor">Dbm_error</span> <span class="string">"dbm_delete"</span></code>.<br>
</div>
<pre><span id="VALfirstkey"><span class="keyword">val</span> firstkey</span> : <code class="type"><a href="Dbm.html#TYPEt">t</a> -> string</code></pre><div class="info">
See <a href="Dbm.html#VALnextkey"><code class="code"><span class="constructor">Dbm</span>.nextkey</code></a>.<br>
</div>
<pre><span id="VALnextkey"><span class="keyword">val</span> nextkey</span> : <code class="type"><a href="Dbm.html#TYPEt">t</a> -> string</code></pre><div class="info">
Enumerate all keys in the given database, in an unspecified order.
   <code class="code">firstkey db</code> returns the first key, and repeated calls
   to <code class="code">nextkey db</code> return the remaining keys. <code class="code"><span class="constructor">Not_found</span></code> is raised
   when all keys have been enumerated.<br>
</div>
<pre><span id="VALiter"><span class="keyword">val</span> iter</span> : <code class="type">(string -> string -> 'a) -> <a href="Dbm.html#TYPEt">t</a> -> unit</code></pre><div class="info">
<code class="code">iter f db</code> applies <code class="code">f</code> to each (<code class="code">key</code>, <code class="code">data</code>) pair in
   the database <code class="code">db</code>. <code class="code">f</code> receives <code class="code">key</code> as first argument
   and <code class="code">data</code> as second argument.<br>
</div>
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