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Linq code to select one item
...ion methods directly like:
var item = Items.First(i => i.Id == 123);
And if you don't want to throw an error if the list is empty, use FirstOrDefault which returns the default value for the element type (null for reference types):
var item = Items.FirstOrDefault(i => i.Id == 123);
if (ite...
How to Store Historical Data
Some co-workers and I got into a debate on the best way to store historical data. Currently, for some systems, I use a separate table to store historical data, and I keep an original table for the current, active record. So, let's say I have table FOO. Under my system, all active records will go ...
Draw text in OpenGL ES
...aceView. This is slow and bad, but the most direct approach.
Render common strings to textures, and simply draw those textures. This is by far the simplest and fastest, but the least flexible.
Roll-your-own text rendering code based on a sprite. Probably second best choice if 2 isn't an option. A go...
Changing the background drawable of the searchview widget
I'm trying to change the drawable that sits in the Android actionbar searchview widget.
12 Answers
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uppercase first character in a variable with bash
I want to uppercase just the first character in my string with bash.
15 Answers
15
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PHP DOMDocument loadHTML not encoding UTF-8 correctly
...
DOMDocument::loadHTML will treat your string as being in ISO-8859-1 unless you tell it otherwise. This results in UTF-8 strings being interpreted incorrectly.
If your string doesn't contain an XML encoding declaration, you can prepend one to cause the string to ...
HMAC-SHA1 in bash
...mber to use -n with echo or else a line break character is appended to the string and that changes your data and the hash.
That command comes from the OpenSSL package which should already be installed (or easily installed) in your choice of Linux/Unix, Cygwin and the likes.
Do note that older vers...
Joining two lists together
If I have two lists of type string (or any other type), what is a quick way of joining the two lists?
15 Answers
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How can I find the number of arguments of a Python function?
...signature(someMethod)
Now, you can either view its parameters quickly by string it:
str(sig) # returns: '(self, arg1, kwarg1=None)'
or you can also get a mapping of attribute names to parameter objects via sig.parameters.
params = sig.parameters
print(params['kwarg1']) # prints: kwarg1=20
...
How to read data From *.CSV file using javascript?
...r for accuracy.
This code will work when your data.txt file is one long string of comma-separated entries, with no newlines:
data.txt:
heading1,heading2,heading3,heading4,heading5,value1_1,...,value5_2
javascript:
$(document).ready(function() {
$.ajax({
type: "GET",
url:...