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Asp.net - Add blank item at top of dropdownlist
...You can use AppendDataBoundItems=true to easily add:
<asp:DropDownList ID="drpList" AppendDataBoundItems="true" runat="server"><br/>
<asp:ListItem Text="" Value="" /><br/>
</asp:DropDownList>
...
Removing multiple classes (jQuery)
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
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Redirecting to previous page after authentication in node.js using passport.js
...
hm.. its not quite I'm looking for. I call ensureAuthenticated to figure out if a user is already authed or not, if not it is redirected to /login. From this view I need a way to get back to /account. Calling req.path within /login gives me simple /login back. Us...
Convert string to binary in python
... "hello world"
>>> map(bin, bytearray(st))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: string argument without an encoding
Because, as explained in the link above, if the source is a string, you must also give the encoding:
>>>...
string.IsNullOrEmpty(string) vs. string.IsNullOrWhiteSpace(string)
...For performance, IsNullOrWhiteSpace is not ideal but is
good. The method calls will result in a small performance penalty.
Further, the IsWhiteSpace method itself has some indirections that can
be removed if you are not using Unicode data. As always, premature
optimization may be evil, but i...
Java: Clear the console
...
They are ANSI escape codes. Specifically clear screen, followed by home. But why is 'home' necessary?
– jdurston
Nov 12 '15 at 20:01
...
How to avoid “ConcurrentModificationException” while removing elements from `ArrayList` while iterat
...
Use an Iterator and call remove():
Iterator<String> iter = myArrayList.iterator();
while (iter.hasNext()) {
String str = iter.next();
if (someCondition)
iter.remove();
}
...
How do I remove background-image in css?
...neral rule which gives all DIVs a background image.
I have one div (with id='a') which I don't want it to have the background image.
What css rule do I have to give it?
...
How to generate all permutations of a list?
... It's using nested generators, which each yield to the previous one up the call stack, in case that's not clear. It uses O(n) memory, which is good.
– cdunn2001
Jul 19 '11 at 19:02
...
What does character set and collation mean exactly?
...set
of rules (only one rule in this case):
"compare the encodings." We call this
simplest of all possible collations a
binary collation.
But what if we want to say that the
lowercase and uppercase letters are
equivalent? Then we would have at
least two rules: (1) treat the
lower...