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Understanding scala enumerations
...I don't understand Scala enumeration classes. I can copy-paste the example from documentation, but I have no idea what is going on.
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Is the sizeof(some pointer) always equal to four?
...e). This is where the limitation of 4GB of RAM for 32-bit processors comes from -- if each memory address corresponds to a byte, to address more memory you need integers larger than 32-bits.
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C#: Printing all properties of an object [duplicate]
...any solution would be), but it provides a pretty good level of abstraction from the reflection API.
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ASP.NET MVC Custom Error Handling Application_Error Global.asax?
...t;% } %>
Here is the function that gathers the all exception messages from the exception tree:
public static string GetErrorMessage(Exception ex, bool includeStackTrace)
{
StringBuilder msg = new StringBuilder();
BuildErrorMessage(ex, ref msg);
if (includeStackT...
Difference between new and override
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Start from a concrete class, check whether it has an implementation of the method of interest. If it does, you're done. If it doesn't, go one step up in the inheritance hierarchy, i.e., check whether the super class has the method ...
Rails: redirect_to with :error, but flash[:error] empty
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You can move away from ruby 1.9 format to: redirect_to(show_path, flash: { error: "Insufficient rights!" })
– mmsilviu
Oct 24 '18 at 14:42
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Why did Bootstrap 3 switch to box-sizing: border-box?
I'm migrating my Bootstrap themes from v2.3.2 to v3.0.0 and one thing I noticed is that a lot of dimensions are calculated differently, due to the following styles in bootstrap.css.
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Dealing with commas in a CSV file
... do this:
foo,"bar,baz"
Another important requirement to consider (also from the spec):
If double-quotes are used to enclose fields, then a double-quote
appearing inside a field must be escaped by preceding it with
another double quote. For example:
"aaa","b""bb","ccc"
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What's the best practice to round a float to 2 decimals? [duplicate]
...just for displaying to the user) you just have to change the function type from float to BigDecimal, like this:
public static BigDecimal round(float d, int decimalPlace) {
BigDecimal bd = new BigDecimal(Float.toString(d));
bd = bd.setScale(decimalPlace, BigDecimal.ROUND_HALF_UP);
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Is it safe to assume a GUID will always be unique?
...ill more likely to get hit by a meteorite than to have even one collision (from Wikipedia). And if you aren't generating them randomly, but are e.g. using the MAC-address-and-time-stamp algorithm, then they're also going to be unique, as MAC addresses are unique among computers and time stamps are ...