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What is the difference between a deep copy and a shallow copy?
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Here's the wikipedia article that this illustration comes from in case it doesn't make sense out of context for you en.wikipedia.org/wiki/Object_copy#Shallow_copy
– corbin
Nov 7 '13 at 1:59
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How to align absolutely positioned element to center?
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Ya I have tried this, but the canvas "start" from middle but not "placed" in the middle of the screen. Is there anyway to set left:50% and move the canvas to left again?
– PaulLing
Oct 11 '11 at 2:21
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Difference Between Schema / Database in MySQL
...r). MSSQL distinguishes all three (and as a result, when accessing a table from a different database, the name must be qualified by both database and schema, e.g. database1.dbo.table2)
– Mike Rosoft
Aug 26 '19 at 14:48
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Can I make a not submit a form?
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Without setting the type attribute, you could also return false from your OnClick handler, and declare the onclick attribute as onclick="return onBtnClick(event)".
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Best way to compare dates in Android
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You can directly create a Calendar from a Date:
Calendar validDate = new GregorianCalendar();
validDate.setTime(strDate);
if (Calendar.getInstance().after(validDate)) {
catalog_outdated = 1;
}
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Best way to stress test a website [duplicate]
...e best thing to use a profiler to track a single request and then work out from that if the performance is ok?
9 Answers
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What exactly does @synthesize do?
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From the documentation:
You use the @synthesize keyword to tell the compiler that it should synthesize the setter and/or getter methods for the property if you do not supply them within the @implementation block.
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JavaScript, elegant way to check nested object properties for null/undefined [duplicate]
... The problem with the get approach is that it may return a property from anywhere in the chain, it doesn't specifically test for the last property.
– RobG
May 22 '14 at 14:21
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Insert into a MySQL table or update if exists
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+1 From what I've found, this method is less problematic for auto-increment keys and other unique key collisions than REPLACE INTO, and it is more efficient.
– Andrew Ensley
May 11 '12 at 2...
How to fix HTTP 404 on Github Pages?
...n't want to use the command line you can just edit your README.md direclty from the web interface.
– Christophe Le Besnerais
Feb 21 '19 at 14:51
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