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What is the exact meaning of IFS=$'\n'?
If the following example, which sets the IFS environment variable to a line feed character...
6 Answers
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Why don't C++ compilers define operator== and operator!=?
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-1. Of course you want a deep comparison, if the programmer wanted a pointer comparison, he'd write (&f1 == &f2)
– Viktor Sehr
Sep 1 '10 at 9:07
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Best way to clear a PHP array's values
...o simply re-instantiate it using
$foo = array(); // $foo is still here
If you want something more powerful use unset since it also will clear $foo from the symbol table, if you need the array later on just instantiate it again.
unset($foo); // $foo is gone
$foo = array(); // $foo is here again
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Java Class that implements Map and keeps insertion order?
... remove, according to the Javadocs, while LinkedHashMap is O(1) for each.
If your API that only expects a predictable sort order, as opposed to a specific sort order, consider using the interfaces these two classes implement, NavigableMap or SortedMap. This will allow you not to leak specific imple...
Unable to load SOS in WinDbg
...SOS you need to adjust your .loadby command. I.e.
.loadby sos clr
Also, if you're on 64 bit, you should install the 32 bit version of Debugging Tools for Windows as well in order to debug 32 bit apps. They install side-by-side, so there's no problem in having both the 32 bit and the 64 bit versio...
How to allow http content within an iframe on a https site
I load some HTML into an iframe but when a file referenced is using http, not https, I get the following error:
9 Answers
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How to determine when a Git branch was created?
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Use
git show --summary `git merge-base foo master`
If you’d rather see it in context using gitk, then use
gitk --all --select-commit=`git merge-base foo master`
(where foo is the name of the branch you are looking for.)
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git cherry-pick says “…38c74d is a merge but no -m option was given”
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The way a cherry-pick works is by taking the diff a changeset represents (the difference between the working tree at that point and the working tree of its parent), and applying it to your current branch.
So, if a commit has two or more parents, it also represents two o...
MySQL Creating tables with Foreign Keys giving errno: 150
...e the tables in the right order: Parent table first, then the Child table. If both tables references each other, you must create one table without FK constraints, then create the second table, then add the FK constraint to the first table with ALTER TABLE.
The two tables must both support foreign k...
How to control the line spacing in UILabel
...adding something new to this answer, so I don't feel as bad... Here is a Swift answer:
import Cocoa
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.lineSpacing = 40
let attrString = NSMutableAttributedString(string: "Swift Answer")
attrString.addAttribute(.paragraphStyle, value:para...