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static allocation in java - heap, stack and permanent generation
I have been lately reading a lot on memory allocation schemes in java, and there have been many doubts as I have been reading from various sources. I have collected my concepts, and I would request to go through all of the points and comment on them. I came to know that memory allocation is JVM spec...
Can I store the .git folder outside the files I want tracked?
...p; echo \"gitdir: $1\" >> .git; }; f"
Use git version control on a read-only working directory
With the knowledge above, you can even set up git version control for an working directory without having write permissions. If you either use --git-dir on every git command or execute every comma...
Why can't variables be declared in a switch statement?
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Relative to opening a new scope - favor readability and consistency in the code. In the old days, you might have automatically got an "extra" stack frame, but now that should not be the case for any decent optimizing compiler.
– Tall Jeff
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How can I get System variable value in Java?
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Use the System.getenv(String) method, passing the name of the variable to read.
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Table Naming Dilemma: Singular vs. Plural Names [closed]
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I had same question, and after reading all answers here I definitely stay with SINGULAR, reasons:
Reason 1 (Concept). You can think of bag containing apples like "AppleBag", it doesn't matter if contains 0, 1 or a million apples, it is always the same bag....
Perl flags -pe, -pi, -p, -w, -d, -i, -t?
...ciated with the controlling terminal, and is inherited from the shell that reads stdin and sets up the argument list to perl, they are NOT the same thing.
– William Pursell
Jun 10 '11 at 15:57
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Creating a constant Dictionary in C#
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If using 4.5+ Framework I would use ReadOnlyDictionary (also ReadOnly Collection for lists) to do readonly mappings/constants. It's implemented in the following way.
static class SomeClass
{
static readonly ReadOnlyDictionary<string,int> SOME_MAPPING...
Make a Bash alias that takes a parameter?
... is to just do an exec bash: It will start a new shell, giving you a clean read of your configs, just as if you closed and reopened, but keeping that session's environment variable settings too. Also, executing bash without the exec can be useful when you want to handle thinks like a stack.
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How to hide elements without having them take space on the page?
...ts not possible to remove element from dom man. by using this option also. read the question
– Pranay Rana
May 28 '10 at 11:58
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How to have conditional elements and keep DRY with Facebook React's JSX?
...t;/div>
</If>
You have to be careful when you use it. I suggest reading other answers for alternative (safer) approaches.
UPDATE 2: Looking back, this approach is not only dangerous but also desperately cumbersome. It's a typical example of when a developer (me) tries to transfer pattern...