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What does a type followed by _t (underscore-t) represent?
...estion, but I can't find it with the Stack Overflow search or Google. What does a type followed by a _t mean? Such as
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Does Ruby have a string.startswith(“abc”) built in method?
Does Ruby have a some_string.starts_with("abc") method that's built in?
4 Answers
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How does facebook, gmail send the real time notification?
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The way Facebook does this is pretty interesting.
A common method of doing such notifications is to poll a script on the server (using AJAX) on a given interval (perhaps every few seconds), to check if something has happened. However, this ...
What does $_ mean in PowerShell?
I've seen the following a lot in PowerShell, but what does it do exactly?
6 Answers
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Why does this iterative list-growing code give IndexError: list assignment index out of range?
...ut you're attempting to write to element [0] in the first iteration, which doesn't exist yet.
Try the following instead, to add a new element to the end of the list:
for l in i:
j.append(l)
Of course, you'd never do this in practice if all you wanted to do was to copy an existing list. You'd...
Does JavaScript have a built in stringbuilder class?
...ipt introduced string literals.
var classType = "stringbuilder";
var q = `Does JavaScript have a built-in ${classType} class?`;
Notice that back-ticks, instead of single quotes, enclose the string.
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How to check if mysql database exists
...ts is:
SHOW DATABASES LIKE 'dbname';
If database with the name 'dbname' doesn't exist, you get an empty set. If it does exist, you get one row.
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What does the “-U” option stand for in pip install -U
...ling, I can't find any docs for pip's command line options/arguments. What does pip install -U mean? Does anyone have a link to a list of pip's options and arguments?
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What does the CSS rule “clear: both” do?
What does the following CSS rule do:
5 Answers
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TypeError: 'str' does not support the buffer interface
...riginal code worked for me under 3.1, and the sample code in the docs also does not encode explicitly. If you use it on non-ASCII text, does gunzip decompress it? I got an error.
– Tom Zych
Mar 29 '11 at 10:59
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