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Why there is no ConcurrentHashSet against ConcurrentHashMap
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@Andrew, I think the motivation behind using a "ConcurrentSet" stems from not the API but rather the implementation - thread safety but without a universal lock - multiple concurrent reads for instance.
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What is the --save option for npm install?
I saw some tutorial where the command was:
11 Answers
11
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What does curly brackets in the `var { … } = …` statements do?
...om arrays or objects using a syntax that mirrors the construction of array and object literals.
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One particularly useful thing you can do with destructuring assignment is to read an entire structure in a single statement, although there are a number of interesting things you can do with them,...
Why 0 is true but false is 1 in the shell?
...failure - why it happened, how to fix it, etc. Having zero mean 'success' and non-zero mean failure lets you can check pretty easily for success, and investigate the particular error for more details if you want to. A lot of APIs and frameworks have a similar convention - functions that succeed re...
'python' is not recognized as an internal or external command [duplicate]
So I have recently installed Python Version 2.7.5 and I have made a little loop thing with it but the problem is, when I go to cmd and type python testloop.py I get the error:
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Check for array not empty: any?
...something or not. This includes things that evaluate to false, such as nil and false.
>> a = []
=> []
>> a.empty?
=> true
>> a = [nil, false]
=> [nil, false]
>> a.empty?
=> false
>> a = [nil]
=> [nil]
>> a.empty?
=> false
The method any? comes ...
Android Camera : data intent returns null
I have an android application which contains multiple activities.
11 Answers
11
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Setting a property by reflection with a string value
...o change representation formats. Not all conversions are possible, though, and you may need to write special case logic if you want to support conversions from types that are not IConvertible.
The corresponding code (without exception handling or special case logic) would be:
Ship ship = new Ship(...
Warning: push.default is unset; its implicit value is changing in Git 2.0
I've been using Git for a while now and have recently downloaded an update only to find this warning message come up when I try to push .
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How to break nested loops in JavaScript? [duplicate]
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You need to name your outer loop and break that loop, rather than your inner loop - like this.
outer_loop:
for(i=0;i<5;i++) {
for(j=i+1;j<5;j++) {
break outer_loop;
}
alert(1);
}
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