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Difference between null and empty (“”) Java String
... can still invoke methods or functions on it like
a.length()
a.substring(0, 1)
and so on.
If the String equals null, like b, Java would throw a NullPointerException if you tried invoking, say:
b.length()
If the difference you are wondering about is == versus equals, it's this:
== compares ...
Removing duplicate rows in Notepad++
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answered Oct 18 '10 at 10:46
Colin PickardColin Pickard
42.2k1111 gold badges9191 silver badges142142 bronze badges
...
How to clear variables in ipython?
...
208
%reset seems to clear defined variables.
...
How can I know if a process is running?
...ocess[] pname = Process.GetProcessesByName("notepad");
if (pname.Length == 0)
MessageBox.Show("nothing");
else
MessageBox.Show("run");
You can loop all process to get the ID for later manipulation:
Process[] processlist = Process.GetProcesses();
foreach(Process theprocess in processlist){
...
Where do I find the bashrc file on Mac?
...'
– Michael Dimmitt
Feb 4 '17 at 16:05
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Best Practices for securing a REST API / web service [closed]
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answered Aug 11 '08 at 8:45
Greg HewgillGreg Hewgill
783k167167 gold badges10841084 silver badges12221222 bronze badges
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Node.js check if file exists
...
230
Why not just try opening the file ? fs.open('YourFile', 'a', function (err, fd) { ... })
anyway ...
Tick symbol in HTML/XHTML
... have glyphs for all the code points.
Try the following characters:
☐ (0x2610 in Unicode hexadecimal [HTML decimal: ☐]): an empty (unchecked) checkbox
☑ (0x2611 [HTML decimal: ☑]): the checked version of the previous checkbox
✓ (0x2713 [HTML decimal: ✓])
✔ (0...
Set active tab style with AngularJS
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Rob JuurlinkRob Juurlink
3,80133 gold badges1515 silver badges1818 bronze badges
...
opengl: glFlush() vs. glFinish()
...|
edited Jun 26 '17 at 23:09
Wagner Patriota
4,7612222 silver badges4141 bronze badges
answered Jan 27 '...
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