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Why does ConcurrentHashMap prevent null keys and values?
...eature, which wasn't available back then (Java 5). You could use Optionals now, indeed.
– Bruno
Sep 18 '18 at 15:02
@A...
In Eclipse, can I have multiple Console views at once, each showing a different Console?
...k this button one of your options should be "New Console View".
You'll now have 2 console views.
One of your other buttons near your console tab is "Display Selected Console". When you choose this option you can select from any of your running applications.
Just select the tab, select which a...
How to have conditional elements and keep DRY with Facebook React's JSX?
...ple of when a developer (me) tries to transfer patterns and approaches he knows from one area to another but it doesn't really work (in this case other template languages).
If you need a conditional element, do it like this:
render: function () {
return (
<div id="page">
...
github: No supported authentication methods available
...s that said "import your key", and saw that it worked, but it doesn't work now, see Chapter 9: Using Pageant for authentication.
One last tip if you are on Windows: you may have multiple instances of the PuTTY suite installed by various tools. TortoiseGit, for example, installs its own.
...
Rails: fields_for with index?
... Rails 4.0.2+ users should check out Ben's answer as index is now built into the builder.
– notapatch
Oct 10 '14 at 10:29
1
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Example JavaScript code to parse CSV data
...and if it matches
// field delimiter. If id does not, then we know
// that this delimiter is a row delimiter.
if (
strMatchedDelimiter.length &&
strMatchedDelimiter !== strDelimiter
){
// Sin...
How can you get the Manifest Version number from the App's (Layout) XML variables?
...rsion number in the main part of the code. What I have been doing up until now is to link the version number in a String XML file to the manifest (@string/Version). What I would like to do is to do it the other way around, link a string XML variable to the version in the manifest. The reason? I'd li...
In Unix, how do you remove everything in the current directory and below it?
I know this will delete everything in a subdirectory and below it:
10 Answers
10
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UISegmentedControl below UINavigationbar in iOS 7
...e same as the navigation bar. That's because they are not the same bar.
Now to remove the hairline. The "hairline" is an UIImageView that is a subview of the navigation bar. You can find it and set it as hidden. This is what Apple does in their native calendar app, for example, as well as the sto...
“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
...nting MERGE was made in 2005, but there's no progress or plan as far as I know. bugs.mysql.com/bug.php?id=9018
– Bill Karwin
Jul 16 '12 at 2:23
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