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biggest integer that can be stored in a double
... Assuming it will be 'close' but less than a 2^N, then a faster test is double dbl = 1; while (dbl + 1 != dbl) dbl *= 2; while (dbl == --dbl); which yields the same result
– Seph
Mar 6 '12 at 10:21
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How can I remove a character from a string using Javascript?
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anyway according to tests (stackoverflow.com/questions/50463850/…) unless youre writting a high performance (10k operations per sec) javascript the performance difference is not an issue or "high price to pay" so i dont see how exactly your co...
Spring RestTemplate timeout
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The above code doesn't work in latest Spring. It gives ClassCastException java.lang.ClassCastException: org.springframework.http.client.InterceptingClientHttpRequestFactory cannot be cast to org.springframework.http.client.HttpComponentsClientHttpRequestFact...
Shortcuts in Objective-C to concatenate NSStrings
...line pretty well: string = [[NSArray arrayWithObjects:@"This", "Is", "A", "Test", nil] componentsJoinedByString:@" "];
– Rob Napier
Feb 16 '10 at 14:37
4
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Useful GCC flags for C
...e mine:
-Wextra, -Wall: essential.
-Wfloat-equal: useful because usually testing floating-point numbers for equality is bad.
-Wundef: warn if an uninitialized identifier is evaluated in an #if directive.
-Wshadow: warn whenever a local variable shadows another local variable, parameter or global v...
How to group dataframe rows into list in pandas groupby?
...ataFrame({'a':ukeys, 'b':[list(a) for a in arrays]})
return df2
Tests:
In [301]: %timeit f(df)
1000 loops, best of 3: 1.64 ms per loop
In [302]: %timeit df.groupby('a')['b'].apply(list)
100 loops, best of 3: 5.26 ms per loop
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Can't install RMagick 2.13.1. Can't find MagickWand.h.
...rounds. It looks like sticking with ImageMagick 6 for now.
On Mac OS X (I tested on Sierra), I used HomeBrew's versions tap like:
brew tap homebrew/versions
brew install imagemagick@6
Then, use the path shown on above installation:
PKG_CONFIG_PATH=/usr/local/opt/imagemagick@6/lib/pkgconfig gem ...
Java 8 Distinct by property
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I really prefer this solution, because it lets you test more than just one attribute. +1 to Guava Equivalence class, looks like it was built for exactly this.
– wilmol
Jul 30 '19 at 6:31
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registerForRemoteNotificationTypes: is not supported in iOS 8.0 and later
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From my tests (that took an entire day), if I go to the Settings and disable notifications, isRegisteredForRemoteNotifications still returns YES
– Iulian Onofrei
Feb 13 '15 at 17:25
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How to “pretty” format JSON output in Ruby on Rails
... be introduced to trigger formatting for manual curl requests on demand.
(Tested with Rails 3.2.8-5.0.0, Ruby 1.9.3-2.2.0, Linux)
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