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What does value & 0xff do in Java?
...s Java that the integer literal that follows should be interpreted as hex (base 16). Java also supports a bare 0 prefix for octal literals and a 0b (or 0B) prefix for binary literals. See the Java Language Specification for more info in integer literals.
– Ted Hopp
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When to use Vanilla JavaScript vs. jQuery?
...he answer depends on what you're attempting to achieve. If, as I presumed based on your reference to performance benefits, you're after the best possible speed out of your application, then using jQuery introduces overhead every time you call $(). If you're going for readability, consistency, cros...
How to keep the local file or the remote file during merge using Git and the command line?
...done.
Edition:
Keep in mind that this is for a merge scenario. During a rebase --theirs refers to the branch where you've been working.
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Error: could not find function … in R
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If the function is in one of the core/base R libraries, you may need to update that. In my case, I was trying to use the hasName function in utils. However, I was using 3.3.1 and hasName wasn't introduced until 3.4.0. As you can't update utils as a stand-alone l...
Securely storing environment variables in GAE with app.yaml
... == NOT_SET_VALUE:
raise Exception(('Setting %s not found in the database. A placeholder ' +
'record has been created. Go to the Developers Console for your app ' +
'in App Engine, look up the Settings record with name=%s and enter ' +
'its value in that record\'s value...
The difference between try/catch/throw and try/catch(e)/throw e
... have a Person class with a .Save() method that will persist it into a database. Let's say that your application executes the Person.Save() method somewhere. If your DB refuses to save the Person, then .Save() will throw an exception. Should you use throw or throw e in this case? Well, it depends.
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What is the difference between save and export in Docker?
... a physical server, that would be the installation .ISO image or disk. The base operating system.
It will pack the layers and metadata of all the chain required to build the image. You can then load this "saved" images chain into another docker instance and create containers from these images.
expo...
How often does python flush to a file?
...is what you need.
EDIT: I think you would auto-flush in python this way (based
from here)
#0 means there is no buffer, so all output
#will be auto-flushed
fsock = open('out.log', 'w', 0)
sys.stdout = fsock
#do whatever
fsock.close()
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Finding Number of Cores in Java
... other threads and processes, this is the number the calculation should be based on.
– malamut
Nov 28 '19 at 9:09
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What's wrong with cplusplus.com?
...n unforgiveable error, it just shows that the cplusplus description wasn't based on the standard.
– Steve Jessop
Jun 29 '11 at 12:27
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