<div dir="ltr">I find the function has been implemented in ndnsim, that is ,  <a class="gmail-code" href="https://ndnsim.net/2.0/doxygen/classnfd_1_1Cs.html#aee7ac92a2062cd2ff677da8350ef9fc0" style="color:rgb(70,101,162);font-weight:bold;text-decoration:none;font-family:monospace,fixed;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;letter-spacing:normal;text-align:start;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(252,252,252)">Cs::erase</a><span style="color:rgb(0,0,0);font-family:monospace,fixed;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(252,252,252);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">(</span><span class="gmail-keyword" style="color:rgb(0,128,0);font-family:monospace,fixed;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(252,252,252);text-decoration-style:initial;text-decoration-color:initial">const</span><span style="color:rgb(0,0,0);font-family:monospace,fixed;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(252,252,252);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"> </span><a class="gmail-code" href="https://ndnsim.net/2.0/doxygen/namespacens3_1_1ndn.html#a929e852c0890fcaf036d9cea962a0241" style="color:rgb(70,101,162);font-weight:bold;text-decoration:none;font-family:monospace,fixed;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;letter-spacing:normal;text-align:start;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(252,252,252)">Name</a><span style="color:rgb(0,0,0);font-family:monospace,fixed;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(252,252,252);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">& exactName), but ndnsim is different from the NFD. And I know the erase function is not implemented in NFD now. How can I implement the same function in NFD. Cause I want to erase a entry and the related data in CS before I use CS.insert（）.</span><div><span style="color:rgb(0,0,0);font-family:monospace,fixed;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(252,252,252);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Can anyone give some ideas? Very THANKS!</span></div><div><span style="color:rgb(0,0,0);font-family:monospace,fixed;font-size:13px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-transform:none;white-space:pre-wrap;word-spacing:0px;background-color:rgb(252,252,252);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></div><div><font color="#000000" face="monospace, fixed"><span style="white-space:pre-wrap;background-color:rgb(252,252,252)">Yours,</span></font></div><div><font color="#000000" face="monospace, fixed"><span style="white-space:pre-wrap;background-color:rgb(252,252,252)">Junjie</span></font></div></div>