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Unix command to find lines common in two files
...ext} $0 in arr' file1 file2
This will read all lines from file1 into the array arr[], and then check for each line in file2 if it already exists within the array (i.e. file1). The lines that are found will be printed in the order in which they appear in file2.
Note that the comparison in arr uses ...
Allowed memory size of 33554432 bytes exhausted (tried to allocate 43148176 bytes) in php
...loop that has run out of control and you are creating objects or adding to arrays on each pass of the loop.
Check for infinite loops.
If that isn't the problem, try and help out PHP by destroying objects that you are finished with by setting them to null. eg. $OldVar = null;
Check the code where...
How can I transform string to UTF-8 in C#?
...ault is GB2312, then Encoding.Default.GetBytes will encode string to byte array use GB2312 encoder, then Encoding.UTF8.GetString will try to decode the byte array use UTF8 decoder, the result should be wrong, but why this works. @anothershrubery
– guorongfei
F...
What is the difference between trie and radix trie data structures?
...you wan to search the next char you need to see the ith index in the child array of the current node but in radix tree you need search for all the child nodes sequentially. See the implementation code.google.com/p/radixtree/source/browse/trunk/RadixTree/src/…
– Trying
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Iterate through object properties
...
As of JavaScript 1.8.5 you can use Object.keys(obj) to get an Array of properties defined on the object itself (the ones that return true for obj.hasOwnProperty(key)).
Object.keys(obj).forEach(function(key,index) {
// key: the name of the object key
// index: the ordinal positi...
What is the best regular expression to check if a string is a valid URL?
..._encoded = '%' . cc($HEXDIG) . cc($HEXDIG);
$dec_octet = ncg(implode('|', array(
cc($DIGIT),
cc('1-9') . cc($DIGIT),
'1' . cc($DIGIT) . cc($DIGIT),
'2' . cc('0-4') . cc($DIGIT),
'25' . cc('0-5')
)));
$IPv4address = $dec_octet . ncg('\\.' . $dec_octet, '{3}');
$h16 = cc($HEXDIG...
Why does instanceof return false for some literals?
Array literals and Object literals match...
10 Answers
10
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rails - Devise - Handling - devise_error_messages
...sh.each do |name, msg| %>
# New code (allow for flash elements to be arrays)
<% if msg.class == Array %>
<% msg.each do |message| %>
<%= content_tag :div, message, :id => "flash_#{name}" %>
<% end %>
<% else %>
# old code
<%= conte...
Predicate Delegates in C#
...DateRangeClass> myList = new List<DateRangeClass<GetSomeDateRangeArrayToPopulate);
myList.FindAll(x => (x.StartTime <= minDateToReturn && x.EndTime >= maxDateToReturn):
share
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Which concurrent Queue implementation should I use in Java?
...formance characteristics and blocking behavior.
Taking the easiest first, ArrayBlockingQueue is a queue of a fixed size. So if you set the size at 10, and attempt to insert an 11th element, the insert statement will block until another thread removes an element. The fairness issue is what happens i...