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NSString property: copy or retain?
... behind its back, you should mark the properties representing them copy. (And if you write the setter yourself instead of using @synthesize you should remember to actually use copy instead of retain in it.)
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Does PowerShell support constants?
...iable test -option ReadOnly -value 100
The difference between "Constant" and "ReadOnly" is that a read-only variable can be removed (and then re-created) via
Remove-Variable test -Force
whereas a constant variable can't be removed (even with -Force).
See this TechNet article for more details.
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\d is less efficient than [0-9]
...code escapes are still valid in ECMAScript (\u1234). It's "just" the shorthand character classes that change meaning (like \d) and the Unicode property/script shorthands that go away (like \p{N}).
– Tim Pietzcker
May 20 '13 at 9:51
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Is it possible to declare a variable in Gradle usable in Java?
... in Java ?
Basically I would like to declare some vars in the build.gradle and then getting it (obviously) at build time. Just like a pre-processor macros in C/C++...
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Redis: possible to expire an element in an array or sorted set?
...tire key/value pair? What if I want to add values to a List type structure and have them get auto removed 1 hour after insertion. Is that currently possible, or would it require running a cron job to do the purging manually?
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Getting the first and last day of a month, using a given DateTime object
I want to get the first day and last day of the month where a given date lies in. The date comes from a value in a UI field.
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What are the differences between node.js and node?
...js.
nodejs is what you want, however it is arguably better to have the command be called node for compatibility with scripts that use #!/usr/bin/env node.
You can either just create a symlink in your path:
sudo ln -s `which nodejs` /usr/local/bin/node
Or you could install nvm and then use it to ins...
Resolving javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path
Edit :- Tried to format the question and accepted answer in more presentable way at mine Blog
22 Answers
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Node.js spawn child process and get terminal output live
...that outputs 'hi', sleeps for a second, outputs 'hi', sleeps for 1 second, and so on and so forth. Now I thought I would be able to tackle this problem with this model.
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What's the result of += in C and C++?
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Semantics of the compound assignment operators is different in C and C++:
C99 standard, 6.5.16, part 3:
An assignment operator stores a value in the object designated by the left operand. An
assignment expression has the value of the left operand after the assignment, but is not an
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