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Replace multiple whitespaces with single whitespace in JavaScript string
I have strings with extra whitespaces, each time there's more than only one whitespace I'd like it be only one.
11 Answers
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How to log PostgreSQL queries?
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In your data/postgresql.conf file, change the log_statement setting to 'all'.
Edit
Looking at your new information, I'd say there may be a few other settings to verify:
make sure you have turned on the log_destination variable
make sure you turn on the logging_collector
also mak...
Why use strict and warnings?
...control warnings.
Use strict - declare variables scope. It is used to set some kind of
discipline in the script.If barewords are used in the code they are
interpreted.All the variables should be given scope ,like my,our or
local.
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python dataframe pandas drop column using int
I understand that to drop a column you use df.drop('column name', axis=1). Is there a way to drop a column using a numerical index instead of the column name?
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Resolving a Git conflict with binary files
I've been using Git on Windows (msysgit) to track changes for some design work I've been doing.
12 Answers
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Printing hexadecimal characters in C
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It doesn't print anything because the minimum is set to 0. To fix this, try printf("%.2x", 0); which will boost the minimum characters drawn to 2. To set a max, prepend the . with a number. For example, you can force only 2 characters drawn by doing printf("%2.2x", 0);
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Why does Java's hashCode() in String use 31 as a multiplier?
...you might get WAY more collisions if you use any kind of international charset with common characters outside the ASCII range. At least, I checked this for 31 and German. So I think the choice of 31 is broken.
– Hans-Peter Störr
May 11 '10 at 6:58
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Why aren't superclass __init__ methods automatically invoked?
...ed during the creation of a new object, after that object is allocated, to set member variables on the new object), and is almost always the place to implement functionality that in other languages you would put in a constructor. So just call it a constructor!
– Ben
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What should main() return in C and C++?
...nvironment. All objects with static storage duration shall be initialized (set to their initial values) before program startup. The manner and timing of such initialization are otherwise unspecified. Program termination returns control to the execution environment.
5.1.2.1 Freestanding environm...
encryption/decryption with multiple keys
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