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Convert DataFrame column type from string to datetime, dd/mm/yyyy format
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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UIRefreshControl - beginRefreshing not working when UITableViewController is inside UINavigationCont
...SVPullToRefresh. Have you tried reading their docs? It seems quite obvious based on the docs that it can be pulled down programmatically: "If you’d like to programmatically trigger the refresh (for instance in viewDidAppear:), you can do so with: [tableView triggerPullToRefresh];" See: github....
How can I remove the gloss on a select element in Safari on Mac?
...cluding any image files:
select{
background: url(data:image/svg+xml;base64,PHN2ZyBpZD0iTGF5ZXJfMSIgZGF0YS1uYW1lPSJMYXllciAxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCA0Ljk1IDEwIj48ZGVmcz48c3R5bGU+LmNscy0xe2ZpbGw6I2ZmZjt9LmNscy0ye2ZpbGw6IzQ0NDt9PC9zdHlsZT48L2RlZnM+PHRpdG...
javac : command not found
... ax.ax.
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What is the optimal length for an email address in a database?
...
from Ask Metafilter:
My data comes from a database of 323
addresses. The distribution has some
upper-end outliers
(positively-skewed). It is normally
distributed without the outliers (I
tested it.)
Min: 12 1st quartile: 19 Mean (w/
outliers): 23.04 Mean ...
How do I iterate over an NSArray?
...for OS X 10.6 / iOS 4.0 and above, you also have the option of using block-based APIs to enumerate arrays and other collections:
[array enumerateObjectsUsingBlock:^(id object, NSUInteger idx, BOOL *stop) {
// do something with object
}];
You can also use -enumerateObjectsWithOptions:usingBloc...
How is the default max Java heap size determined?
...
In my case on Linux, InitialHeapSize = 262803264 and MaxHeapSize = 4206886912 which is about 256 MB and 4 GB if I'm not mistaken. Does this mean that every JVM starts as if it was launched with -Xms256m -Xmx4g options?
– Yuriy Nakonechnyy
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How do I create a URL shortener?
... MySQL table for example).
For this example, I will use 12510 (125 with a base of 10).
Now you have to convert 12510 to X62 (base 62).
12510 = 2×621 + 1×620 = [2,1]
This requires the use of integer division and modulo. A pseudo-code example:
digits = []
while num > 0
remainder = modulo(n...
Best implementation for hashCode method for a collection
...rstName, this.lastName);
}
This requires either Guava (com.google.common.base.Objects.hashCode) or the standard library in Java 7 (java.util.Objects.hash) but works the same way.
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Does PowerShell support constants?
...ller.
The following modified function fixes this problem. The solution is based on this answer to the question "Is there any way for a powershell module to get at its caller's scope?".
function Set-Constant {
<#
.SYNOPSIS
Creates constants.
.DESCRIPTION
This function...