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Extracting specific columns in numpy array
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I assume you wanted columns 1 and 9?
To select multiple columns at once, use
X = data[:, [1, 9]]
To select one at a time, use
x, y = data[:, 1], data[:, 9]
With names:
data[:, ['Column Name1','Column Name2']]
You can get the names from data.dtype.names…
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How to undo another user’s checkout in TFS?
...t-clicking the desired project, folder, or file in Source Control Explorer
Select Properties
Select the Security tab
Select the appropriate user or group in the Users and Groups section at the top
View the "Permissions for [user/group]:" section at the bottom
Deleting the workspace
tf workspace /...
A generic list of anonymous class
... okay cool, now we need an example of replacing the new {} lines with a select statement. var list = sourceList.Select( o => new { o.ModelId, ...
Why does MYSQL higher LIMIT offset slow the query down?
...h more than 16 million records [2GB in size]. The higher LIMIT offset with SELECT, the slower the query becomes, when using ORDER BY *primary_key*
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How to debug an apache virtual host configuration?
...ck configuration files for syntax errors:
# Red Hat-based (Fedora, CentOS) and OSX
httpd -t
# Debian-based (Ubuntu)
apache2ctl -t
# MacOS
apachectl -t
List virtual hosts
To list all virtual hosts, and their locations:
# Red Hat-based (Fedora, CentOS) and OSX
httpd -S
# Debian-based (Ubuntu)
apac...
How to check all checkboxes using jQuery?
...});
Html should be :
Single check box on checked three checkbox will be select and deselect.
<input type="checkbox" name="checkedAll" id="checkedAll" />
<input type="checkbox" name="checkAll" class="checkSingle" />
<input type="checkbox" name="checkAll" class="checkSingle" />
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What is the argument for printf that formats a long?
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On most platforms, long and int are the same size (32 bits). Still, it does have its own format specifier:
long n;
unsigned long un;
printf("%ld", n); // signed
printf("%lu", un); // unsigned
For 64 bits, you'd want a long long:
long long n;
uns...
Getting attribute using XPath
...e), for
the first element?
Use:
/*/book[1]/title/@lang
This means:
Select the lang attribute of the title element that is a child of the first book child of the top element of the XML document.
To get just the string value of this attribute use the standard XPath function string():
string(...
How do you bind an Enum to a DropDownList control in ASP.NET?
...t; o.EnumProperty, Enum.GetValues(typeof(enumtype)).Cast<enumtype>().Select(x => new SelectListItem { Text = x.ToString(), Value = ((int)x).ToString() }))
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Using Chrome's Element Inspector in Print Preview Mode?
...versions).
Check the Emulate print media checkbox at the Rendering tab and select the Print media type.
Chrome v48+ (Thanks Alex for noticing):
Open the Developer Tools (CTRLSHIFTI or F12)
Click the Toggle device mode button in the left top corner (CTRLSHIFTM).
Make sure the console is shown by c...