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Java8 Lambdas vs Anonymous classes
...xpressions is that AICs introduce a new scope. That is, names are resolved from the AIC's superclasses and interfaces and can shadow names that occur in the lexically enclosing environment. For lambdas, all names are resolved lexically.
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Get yesterday's date in bash on Linux, DST-safe
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you can use
date -d "30 days ago" +"%d/%m/%Y"
to get the date from 30 days ago, similarly you can replace 30 with x amount of days
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Convert NSURL to local file path
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Use the -[NSURL path] method:
NSLog(@"%@", myUrl.path);
From the documentation:
The path of the URL, unescaped with the stringByReplacingPercentEscapesUsingEncoding: method. If the receiver does not conform to RFC 1808, returns nil.
If this URL object contains a file URL ...
Converting user input string to regular expression
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Use the RegExp object constructor to create a regular expression from a string:
var re = new RegExp("a|b", "i");
// same as
var re = /a|b/i;
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Check string for palindrome
...Stream provides all indexes til strings half length and then a comparision from the start and from the end is done.
public static void main(String[] args) {
for (String testStr : Arrays.asList("testset", "none", "andna", "haah", "habh", "haaah")) {
System.out.println("testing " + testSt...
Date ticks and rotation in matplotlib
...ct oriented. If you don't like the fact that there is some plt in it, use from matplotlib.artist import setp; setp(ax.get_xticklabels(), rotation=90) instead.
– ImportanceOfBeingErnest
Oct 9 '17 at 19:29
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Add native files from NuGet package to project output directory
...sing a powershell script (which will only be run inside Visual Studio, not from the command prompt, on build servers or in other IDEs, and is not supported in project.json / xproj DNX projects) and I prefer to use a Link to the files rather than having an additional copy of the files within the proj...
HtmlString vs. MvcHtmlString
...to MVC 2 it might make sense to use IHtmlString or var for values returned from MVC functions. Alternatively I think you can now just switch to HtmlString throughout.
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How to run test cases in a specified file?
...he what's logged when testing it's worth mentioning the -v (verbose) flag. From the docs -v Verbose output: log all tests as they are run. Also print all text from Log and Logf calls even if the test succeeds.
– robstarbuck
Mar 1 '18 at 22:28
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Determine whether an array contains a value [duplicate]
...e note that according to the ES5 spec, this method will behave differently from the native one in case ofsigned zeroes and NaNs (see 15.4.4.14 and 9.12 vs. 11.9.6)
– Christoph
Jul 25 '09 at 9:26
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