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What is lexical scope?
What is a brief introduction to lexical scoping?
18 Answers
18
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JSF vs Facelets vs JSP [duplicate]
...f I understand correctly: JSF consists of all the component tag libraries, converter classes, validator classes, etc., whereas the "facelet" is simply the XHTML file that uses those component tags and binds to the backing beans?
– Pam
Jan 27 '11 at 11:44
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In Typescript, How to check if a string is Numeric
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The way to convert a string to a number is with Number, not parseFloat.
Number('1234') // 1234
Number('9BX9') // NaN
You can also use the unary plus operator if you like shorthand:
+'1234' // 1234
+'9BX9' // NaN
Be careful when ch...
How to echo or print an array in PHP?
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You can use print_r, var_dump and var_export funcations of php:
print_r: Convert into human readble form
<?php
echo "<pre>";
print_r($results);
echo "</pre>";
?>
var_dump(): will show you the type of the thing as well as what's in it.
var_dump($results);
foreach loop: usi...
Why should I avoid std::enable_if in function signatures
...y: the enable_if use and the return/argument types are not merged together into one messy chunk of typename disambiguators and nested type accesses; even though the clutter of the disambiguator and nested type can be mitigated with alias templates, that would still merge two unrelated things togethe...
UTF-8 without BOM
...pt files that I need them to be saved in UTF-8 (without BOM), every time I convert them to the correct format in Notepad++ , they are reverted back to UTF-8 with BOM when I open them in Visual Studio. How can I stop VS2010 from doing that?
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ImportError: No module named site on Windows
...h this problem, see my comment on the main question. Basically you need to convert PYTHONPATH to a windows-style path with export PYTHONPATH=$(cygpath -w $PYTHONPATH).
– robert
Aug 19 '14 at 13:13
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Is there a reason for C#'s reuse of the variable in a foreach?
...oop body, as it made no observable difference. When closure semantics were introduced in C# 2.0, the choice was made to put the loop variable outside the loop, consistent with the "for" loop.
I think it is fair to say that all regret that decision. This is one of the worst "gotchas" in C#, and we a...
Interface defining a constructor signature?
It's weird that this is the first time I've bumped into this problem, but:
18 Answers
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Different ways of adding to Dictionary
...is the This indexer:
public TValue this[TKey key]
{
get
{
int index = this.FindEntry(key);
if (index >= 0)
{
return this.entries[index].value;
}
ThrowHelper.ThrowKeyNotFoundException();
return default(TValue);
}
set
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