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Batch files: How to read a file?
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One very easy way to do it is use the following command:
set /p mytextfile=< %pathtotextfile%\textfile.txt
echo %mytextfile%
This will only display the first line of text in a text file. The other way you can do it is u...
Is null check needed before calling instanceof?
... Specifically, in Item 8, he notes that in equals() methods, one instanceof operator serves two purposes - it verifies that the argument is both non-null and of the correct type. "...[S]o you don't need a separate null check."
– Andy Thomas
Nov 21...
Is there a way to do repetitive tasks at intervals?
...r slow receivers"). The given code does exactly what you say (runs at most one task); if the task takes a long time the next invocation will simply be delayed; no mutex required. If instead it is desired that a new task gets started every interval (even if the previous is not finished) then just use...
How do I mock an autowired @Value field in Spring with Mockito?
...h modifiers "" at org.springframework.util.ReflectionUtils.handleReflectionException(ReflectionUtils.java:112) at org.springframework.util.ReflectionUtils.setField(ReflectionUtils.java:655)
– Akhil Surapuram
Apr 20 at 4:03
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In Windows cmd, how do I prompt for user input and use the result in another command?
...ter Passwd: and didn't want the password text to show in the window, let alone, show in the "DosKey" command buffer? I've tried several different ways, and haven't been able to find a way to do this, outside of writing a little C program to take the input, and assign it to an EnvVar, but that's che...
How to get all Errors from ASP.Net MVC modelState?
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Yes! I (you, anyone) needs "using System.Linq;" in the top. Otherwise you got the message 'Values does not contain a definition for Select many'. It was missing in my case.
– Estevez
Nov 19 '14 at 15:3...
How to detect escape key press with pure JS or jQuery?
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@Ranmocy: What kind of element is it (the one with ID 'test')? Only elements that are capable of receiving focus (form inputs, contenteditable elements, elements with tabindex set) fire key events.
– Tim Down
Oct 9 '14 at 22:05
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Convert duration to hours:minutes:seconds (or similar) in Rails 3 or Ruby
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This one uses the obscure divmod method to divide and modulo at the same time, so it handles Float seconds properly:
def duration(seconds)
minutes, seconds = seconds.divmod(60)
hours, minutes = minutes.divmod(60)
days, hour...
Undefined reference to `sin` [duplicate]
... .o object files, but not build your executable.
As Paul has already mentioned add "-lm" to link with the math library in the step where you are attempting to generate your executable.
In the comment, linuxD asks:
Why for sin() in <math.h>, do we need -lm option explicitly; but,
not fo...
Byte array to image conversion
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Maybe I'm missing something, but for me this one-liner works fine with a byte array that contains an image of a JPEG file.
Image x = (Bitmap)((new ImageConverter()).ConvertFrom(jpegByteArray));
EDIT:
See here for an updated version of this answer: How to convert ima...