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String formatting: % vs. .format vs. string literal
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Something that the modulo operator ( % ) can't do, afaik:
tu = (12,45,22222,103,6)
print '{0} {2} {1} {2} {3} {2} {4} {2}'.format(*tu)
result
12 22222 45 22222 103 22222 6 22222
Very useful.
Another point: format(), being a function, can...
What does “%” (percent) do in PowerShell?
... ForEach-Object
When used in the context of an equation, it's the modulus operator:
> 11 % 5
1
and as the modulus operator, % can also be used in an assignment operator (%=):
> $this = 11
> $this %= 5
> $this
1
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How big can a user agent string get?
... Apache limits the maximum field length to 8k (httpd.apache.org/docs/2.2/mod/core.html#limitrequestfieldsize).
– Gumbo
Mar 17 '09 at 17:11
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mongodb: insert if not exists
...ldn't $setOnInsert with the _id field - it would say something like "can't Mod the _id field". This was a bug, fixed in v2.5.4 or there abouts. If you see this message or issue, just get the latest version.
– Kieren Johnstone
May 17 '15 at 20:16
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Signed versus Unsigned Integers
... magnitude), but more common is two's complement. Both are in use in most modern microprocessors — floating point uses sign and magnitude, while integer arithmetic uses two's complement.
signed integers can hold both positive and negative numbers.
Yes
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Designing function f(f(n)) == -n
...move the integer that doesn't have a positive counterpart, we still have 2(mod4) numbers.
If we remove the 2 maximal numbers left (by abs value), we can get the function:
int sign(int n)
{
if(n>0)
return 1;
else
return -1;
}
int f(int n)
{
if(n==0) return 0;
sw...
How to send a command to all panes in tmux?
...ession, replace -a with -s (It's all in the tmux man page).
I haven't the mod points to comment directly on each of the above answers, so here's why they weren't working for me:
The problem that I had with @shailesh-garg 's answer was that the sync affected only commands issued within the panes, n...
Reloading the page gives wrong GET request with AngularJS HTML5 mode
I want to enable HTML5 mode for my app. I have put the following code for the configuration, as shown here :
24 Answers
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What are the Ruby File.open modes and options?
Ruby's File.open takes modes and options as arguments. Where do I find a complete list of modes and options?
2 Answers
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WWW or not WWW, what to choose as primary site name? [closed]
... 301 redirect to correct the invalid. For an Apache webserver, you can use mod_rewrite to do that.
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