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Removing multiple keys from a dictionary safely
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def entries_to_remove(entries, the_dict):
for key in entries:
if key in the_dict:
del the_dict[key]
A more compact version was provided by mattbornski using dict.pop()
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How is the 'use strict' statement interpreted in Node.js? [duplicate]
..., not the global set objects.
As per your comments you are telling some differences will be there. But it's your assumption. The Node.js code is nothing but your JavaScript code. All Node.js code are interpreted by the V8 JavaScript engine. The V8 JavaScript Engine is an open source JavaScript eng...
What is the difference between sigaction and signal?
...ing to use signal() . To follow convention I should use sigaction() but if I was writing from scratch, which should I choose?
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Is it possible to write data to file using only JavaScript?
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Some suggestions for this -
If you are trying to write a file on client machine, You can't do this in any cross-browser way. IE does have methods to enable "trusted" applications to use ActiveX objects to read/write file.
If you are trying to save it on...
How to prevent form from submitting multiple times from client side?
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What if the form is submitted by pressing enter in a textbox?
– ichiban
May 29 '09 at 16:18
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BestPractice - Transform first character of a string into lower case
...ution is not optimized because string.Format is slow and you don't need it if you have a format that will never change. It also generates an extra string to covert the letter to lowercase, which is not needed.
The approach with "+ 32" is ugly / not maintainable as it requires knowledge of ASCII cha...
Best way to specify whitespace in a String.Split operation
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If you just call:
string[] ssize = myStr.Split(null); //Or myStr.Split()
or:
string[] ssize = myStr.Split(new char[0]);
then white-space is assumed to be the splitting character. From the string.Split(char[]) method's docum...
SQL: How to properly check if a record exists
...rs in recent RDBMS's optimize SELECT COUNT(*) anyway, so while there is a difference in theory (and older databases), you shouldn't notice any difference in practice.
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MySQL ON DUPLICATE KEY - last insert id?
...ression to that MySQL function.
From the MySQL documentation example:
If a table contains an AUTO_INCREMENT column and INSERT ... UPDATE inserts a row, the LAST_INSERT_ID() function returns the AUTO_INCREMENT value. If the statement updates a row instead, LAST_INSERT_ID() is not meaningful. How...
How can I interrupt a ServerSocket accept() method?
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And what to do if the connection was already accepted and the thread is waiting for some data: while((s=in.readLine()) != null) ?
– Alex Fedulov
Aug 24 '12 at 10:56
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