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Apply pandas function to column to create multiple new columns?
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But what do you do if you have 50 columns added like this rather than 6?
– max
Nov 4 '15 at 23:21
14
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How to use radio on change event?
...t element.
$('input[type=radio][name=bedStatus]').change(function() {
if (this.value == 'allot') {
alert("Allot Thai Gayo Bhai");
}
else if (this.value == 'transfer') {
alert("Transfer Thai Gayo");
}
});
http://jsfiddle.net/4gZAT/
Note that you are comparing the v...
Default value of BOOL
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There is no default value if you write
-(void)somemethod {
BOOL x; // <--- no default value
It is initialized to garbage.
However, for a BOOL ivar, it will be initialized to NO, as the whole instance is filled with 0 on initialization.
(Not...
Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C
...bits of v; first get LSB of v
int s = sizeof(v) * CHAR_BIT - 1; // extra shift needed at end
for (v >>= 1; v; v >>= 1)
{
r <<= 1;
r |= v & 1;
s--;
}
r <<= s; // shift when v's highest bits are zero
Faster (32-bit processor)
unsigned char b = x;
b = ((b * 0x08...
Get type of all variables
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Get worked perfectly. Do you know if there is any performance penalty if get() is used to find the type of several large data frames which may be present in the variable list returned by objects()?
– user1625066
Oct 2 '1...
Go: panic: runtime error: invalid memory address or nil pointer dereference
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According to the docs for func (*Client) Do:
"An error is returned if caused by client policy (such as CheckRedirect), or if there was an HTTP protocol error. A non-2xx response doesn't cause an error.
When err is nil, resp always contains a non-nil resp.Body."
Then looking at this code:
re...
Twitter Bootstrap Tabs: Go to Specific Tab on Page Reload or Hyperlink
... few minor issues, one of which is I do not know how go directly to a specific tab from an external link. For example:
24 ...
Use rvmrc or ruby-version file to set a project gemset with RVM?
I use RVM, the Ruby Version Manager to specify a Ruby version and a set of gems for each of my Rails projects.
5 Answers
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PreparedStatement IN clause alternatives?
...ggested it.
Use a stored procedure to construct the result set.
Prepare N different size-of-IN-list queries; say, with 2, 10, and 50 values. To search for an IN-list with 6 different values, populate the size-10 query so that it looks like SELECT my_column FROM my_table WHERE search_column IN (1,2,3...
Using Regular Expressions to Extract a Value in Java
...p and given string
Matcher m = p.matcher("Testing123Testing");
// if an occurrence if a pattern was found in a given string...
if (m.find()) {
// ...then you can use group() methods.
System.out.println(m.group(0)); // whole matched expression
System.out.println(m...