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Drop all tables whose names begin with a certain string
How can I drop all tables whose names begin with a given string?
14 Answers
14
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Why use symbols as hash keys in Ruby?
...saves memory, because they are only stored once.
Symbols in Ruby are basically "immutable strings" .. that means that they can not be changed, and it implies that the same symbol when referenced many times throughout your source code, is always stored as the same entity, e.g. has the same object id...
Find nearest value in numpy array
...f you can't assume that the array is already sorted. It’s overkill for small arrays, but once they get large this is much faster.
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How to wait for all threads to finish, using ExecutorService?
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Basically on an ExecutorService you call shutdown() and then awaitTermination():
ExecutorService taskExecutor = Executors.newFixedThreadPool(4);
while(...) {
taskExecutor.execute(new MyTask());
}
taskExecutor.shutdown();
try {
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What's the difference between Html.Label, Html.LabelFor and Html.LabelForModel
...bel for an input whose name matches the specified input text (more specifically, for the model property matching the string expression):
// Model
public string Test { get; set; }
// View
@Html.Label("Test")
// Output
<label for="Test">Test</label>
Html.LabelFor gives you a label for...
How do I check if a type provides a parameterless constructor?
...Type.EmptyTypes, null);
There's a caveat for value types, which aren't allowed to have a default constructor. You can check if you have a value type using the Type.IsValueType property, and create instances using Activator.CreateInstance(Type);
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How to negate specific word in regex? [duplicate]
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This says it all (I probably would have started with (?!bar) and built up). I don't see why other people are making it so complicated.
– Beta
Aug 7 '09 at 14:49
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gradle build fails on lint task
...ude each other
*/
android {
lintOptions {
// use this line to check all rules except those listed
disable 'RuleToDisable', 'SecondRuleToDisable'
// use this line to check just listed rules
enable 'FirstRuleToCheck', 'LastRuleToCheck'
}
}
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Trim spaces from start and end of string
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Note: As of 2015, all major browsers (including IE>=9) support String.prototype.trim(). This means that for most use cases simply doing str.trim() is the best way of achieving what the question asks.
Steven Levithan analyzed many differ...
Convert string to symbol-able in ruby
Symbols are usually represented as such
7 Answers
7
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