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What's the difference between & and && in MATLAB?
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@neuronet it isn't really about efficiency, more that it permits a construct where the first expression guarantees a condition without which the second expression may cause a run-time error. e.g. d != 0 && 1/d vs d !=0 & 1/d - the ...
Can an int be null in Java?
... @BrianAgnew Let me rectify what I said here, I was plain wrong, I basically didn't realize that int i = (Integer)null; will throw NPE at run-time while unboxing it.
– sactiw
Jan 23 '16 at 12:22
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How to take backup of a single table in a MySQL database?
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SQL usually compresses well--you can pipe the command above through gzip and the resulting file will be much smaller: mysqldump db_name table_name | gzip > table_name.sql.gz to restore: gunzip < table_name.sql.gz | mysql -u...
How do I loop through a list by twos? [duplicate]
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@RoelVandePaar, No that is still an integer. Actually I found the answer. import numpy as np for i in np.arange(-3.14, 3.14, 0.1): print (i)
– Kevin Patel
May 20 at 17:40
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With Spring can I make an optional path variable?
...ve optional path variables, but you can have two controller methods which call the same service code:
@RequestMapping(value = "/json/{type}", method = RequestMethod.GET)
public @ResponseBody TestBean typedTestBean(
HttpServletRequest req,
@PathVariable String type,
@RequestP...
Why does a base64 encoded string have an = sign at the end
...org/wiki/Base64#Output_padding is pretty good. But the answer by Badr is really a better one (it just hasn't caught up in votes yet).
– NH.
Jul 9 '19 at 18:58
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Xcode iOS project only shows “My Mac 64-bit” but not simulator or device
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This is basically happen, when you change your project name or something like that. The solution is, you have to select the right "Scheme" for your project. Here is the solution :
After open your project :
Go to "Product" from upper m...
Make install, but not to default directories?
I want to run 'make install' so I have everything I need, but I'd like it to install the things in their own folder as opposed to the system's /usr/bin etc. is that possible? even if it references tools in the /usr/bin etc.?
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Check if passed argument is file or directory in Bash
I'm trying to write an extremely simple script in Ubuntu which would allow me to pass it either a filename or a directory, and be able to do something specific when it's a file, and something else when it's a directory. The problem I'm having is when the directory name, or probably files too, has s...
What does href expression do?
... triggered when the link is clicked, and that will be what he wants to actually happen, but he wants it to look like a normal <a> tag link.
Some developers use href='#' for the same purpose, but this causes the browser to jump to the top of the page, which may not be wanted. And he couldn't s...