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How to check if a variable is null or empty string or all whitespace in JavaScript?
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MadbreaksMadbreaks
16.5k55 gold badges4646 silver badges6363 bronze badges
64
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Most lightweight way to create a random string and a random hexadecimal number
...r t in t1, t2, t3:
... t.timeit()
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28.165037870407104
9.0292739868164062
5.2836320400238037
t3 only makes one call to the random module, doesn't have to build or read a list, and then does the rest with string formatting.
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no acceptable C compiler found in $PATH when installing python
...ATH=~/gcc-5.2.0/lib:$LD_LIBRARY_PATH
export LD_LIBRARY_PATH=~/gcc-5.2.0/lib64:$LD_LIBRARY_PATH
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Where is svcutil.exe in Windows 7?
...trying to install the v 7.1 of the SDK (and you happen to be on Windows 7 x64), it seems MS has removed svcutil.exe from it. It's nowhere to be found whether you jump through all the hoops to get around the installation errors, or you download the ISO, it's just not there. That wasted about 3 hour...
Does .asSet(…) exist in any API?
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Using Guava, it is as simple as that:
Set<String> mySet = ImmutableSet.<String> of...
PostgreSQL: Drop PostgreSQL database through command line [closed]
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gsamaras
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answered Aug 16 '11 at 5:11
csanocsano
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How to understand nil vs. empty vs. blank in Ruby
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64
Quick tip: !obj.blank? == obj.present?
Can be handy/easier on the eyes in some expressions
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Repository access denied. access via a deployment key is read-only
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Now the SSH option is under the security settings
Click Your Avatar --> Bitbucket Settings ...
Add new row to dataframe, at specific row-index, not appended?
...1:r, ], newrow, existingDF[-(1:r), ]) 801.161 831.7730 854.6320 881.6560 10641.417
Benchmarks
As @MatthewDowle always points out to me, benchmarks need to be examined for the scaling as the size of the problem increases. Here we go then:
benchmarkInsertionSolutions <- function(nrow=5,ncol=4)...
How do I get the time difference between two DateTime objects using C#?
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You want the TimeSpan struct:
TimeSpan diff = dateTime1 - dateTime2;
A TimeSpan object re...