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How to install Xcode Command Line Tools
...10.13)
Once you've latest command line tool installed in your system, set it from Xcode Menu.
(Xcode Menu Items) Xcode ▶ Preferences ▶ Location ▶ Command Line Tool ▶ Select appropriate command line tool
s...
Check for null in foreach loop
...ld be interpreted as "I don't know if there are any elements" use an empty set to show that you know there are no elements in the set. That would also be DRY'er since you won't have to do the null check as often.
EDIT as a follow up on Jons suggestion, you could also create an extension method chan...
support FragmentPagerAdapter holds reference to old fragments
...ating fragment
One day later I found another and better solution.
Call setRetainInstance(true) for all your fragments and save references to them somewhere. I did that in static variable in my activity, because it's declared as singleTask and fragments can stay the same all the time.
This way a...
Disable validation of HTML5 form elements
...orks like CakePHP, it will use the novalidate="novalidate" method when you set the novalidate => true in the $options array of the FormHelper::create(). Thanks bassim for the extra info :)
– Jelmer
Feb 10 '13 at 20:36
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Find CRLF in Notepad++
...
On the Replace dialog, you want to set the search mode to "Extended". Normal or Regular Expression modes wont work.
Then just find "\r\n" (or just \n for unix files or just \r for mac format files), and set the replace to whatever you want.
...
Check existence of directory and create if doesn't exist
...ngs = FALSE:
dir.create(file.path(mainDir, subDir), showWarnings = FALSE)
setwd(file.path(mainDir, subDir))
dir.create() does not crash if the directory already exists, it just prints out a warning. So if you can live with seeing warnings, there is no problem with just doing this:
dir.create(fil...
Group a list of objects by an attribute : Java
...ent>());
}
groupedStudents.get(key).add(student);
}
//print
Set<String> groupedStudentsKeySet = groupedCustomer.keySet();
for (String location: groupedStudentsKeySet) {
List<Student> stdnts = groupedStudents.get(location);
for (Student student : stdnts) {
Sys...
Why is IntelliJ 13 IDEA so slow after upgrading from version 12?
...
What worked for me was editing the idea64.vmoptions in the bin folder and setting the max heap to 8 GB (was 512 MB) and the Max PermGen to at least 1GB (was 300MB).Example below:
-Xms128m
-Xmx8192m
-XX:MaxPermSize=1024m
Upon restart it was much faster.
For IntelliJ 2020 going back to 2017 on Ma...
Removing Java 8 JDK from Mac
...emove them once you know everything else works.
I haven't found I need to set JAVA_HOME for simple things.
Note: I just tried running IntelliJ and it will not start unless you have Apple's JDK 6 installed (see http://youtrack.jetbrains.com/issue/IDEA-93710). Same is true for Eclipse. Netbeans wor...
Odd behavior when Java converts int to byte?
...01
Since the 32nd bit is now the sign bit instead of the 8th bit (and we set the sign bit to 0 which is positive), the original 8 bits from the byte are read by Java as a positive value.
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