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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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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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Is it possible to use AutoLayout with UITableView's tableHeaderView?
...d height. That height can then be applied to the header, and the header is set a second time to reflect the change.
- (void)viewDidLoad
{
[super viewDidLoad];
self.header = [[SCAMessageView alloc] init];
self.header.titleLabel.text = @"Warning";
self.header.subtitleLabel.text = @"T...
Remove multiple keys from Map in efficient way?
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Assuming your set contains the strings you want to remove, you can use the keySet method and map.keySet().removeAll(keySet);.
keySet returns a Set view of the keys contained in this map. The set is backed by the map, so changes to the ...
How to center an iframe horizontally?
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According to http://www.w3schools.com/css/css_align.asp, setting the left and right margins to auto specifies that they should split the available margin equally. The result is a centered element:
margin-left: auto;margin-right: auto;
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jquery selector for id starts with specific text [duplicate]
...ditDialog-n') Note I would likely seek another solution than this for any set beyond trivial length.
– Mark Schultheiss
Jul 26 '17 at 14:33
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How can I make Vim's `J` and `gq` commands use one space after a period?
... a '.'.
Otherwise only one space is inserted.
NOTE: This option is set when 'compatible' is set.
So, you would do a
:set nojoinspaces
to obtain what you desire.
Alternatively, you can toggle the setting with
:set joinspaces!
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Youtube iframe wmode issue
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The "&wmode=xxxx" setting assumes that you're already passing parameters in the URL. I wasn't in my case, so I instead need to add "?wmode=xxxx" to the URL.
– Matt Huggins
May 27 '11 at 20:29
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How to parse float with two decimal places in javascript?
I have the following code. I would like to have it such that if price_result equals an integer, let's say 10, then I would like to add two decimal places. So 10 would be 10.00.
Or if it equals 10.6 would be 10.60. Not sure how to do this.
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PHP script - detect whether running under linux or Windows?
I have a PHP script that may be placed on a windows system or a linux system. I need to run different commands in either case.
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