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What are all the common ways to read a file in Ruby?
... This is hardly idiomatic Ruby. Use foreach instead of open and dispense with the each_line block.
– the Tin Man
Jul 24 '14 at 18:59
7
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How to intercept touches events on a MKMapView or UIWebView objects?
...Here's what I do: Implement a gesture recognizer that cannot be prevented and that cannot prevent other gesture recognizers. Add it to the map view, and then use the gestureRecognizer's touchesBegan, touchesMoved, etc. to your fancy.
How to detect any tap inside an MKMapView (sans tricks)
Wildca...
How to pass a function as a parameter in Java? [duplicate]
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Java 8 and above
Using Java 8+ lambda expressions, if you have a class or interface with only a single abstract method (sometimes called a SAM type), for example:
public interface MyInterface {
String doSomething(int param1, S...
Difference between . and : in Lua
I am confused about the difference between function calls via . and via :
3 Answers
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How to check if a variable exists in a FreeMarker template?
...:
[#if userName??]
Hi ${userName}, How are you?
[/#if]
Or with the standard freemarker syntax:
<#if userName??>
Hi ${userName}, How are you?
</#if>
To check if the value exists and is not empty:
<#if userName?has_content>
Hi ${userName}, How are you?
</#if>
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How to find if a given key exists in a C++ std::map
I'm trying to check if a given key is in a map and somewhat can't do it:
14 Answers
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C++11 range based loop: get item by value or reference to const
... with copies.
Choose auto &x when you want to work with original items and may modify them.
Choose auto const &x when you want to work with original items and will not modify them.
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Gcc error: gcc: error trying to exec 'cc1': execvp: No such file or directory
... 12. Now I am getting an error. I have recently been doing some .so builds and installed Clang not to long ago, but have successfully compiled since both of those events, so not sure what has changed. I used the GUI Software Manager to remove and then install gcc again, but the results are the same:...
Maven: Failed to read artifact descriptor
...an always try mvn -U clean install
-U forces a check for updated releases and snapshots on remote repositories.
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Optimize Font Awesome for only used classes
...will have to manually trim down yourself. Open up the provided .scss file and hack out anything you don't need.
Editing the font file itself to eliminate unneeded glyphs requires a 3rd party application to do so and is beyond the scope of this question.
Fontello is an online web service that c...