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In Clojure, when should I use a vector over a list, and the other way around?
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Arthur UlfeldtArthur Ulfeldt
86.2k2323 gold badges189189 silver badges269269 bronze badges
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Why does Java's hashCode() in String use 31 as a multiplier?
...uted as y := x + 8 * x; z := x + 4 * y. Both steps correspond to one LEA x86 instructions, so this is extremely fast.
In fact, multiplication with the even-larger prime 73 could be done at the same speed by setting y := x + 8 * x; z := x + 8 * y.
Using 73 or 37 (instead of 31) might be better, ...
add column to mysql table if it does not exist
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86
Here is a working solution (just tried out with MySQL 5.0 on Solaris):
DELIMITER $$
DROP PROC...
When is CRC more appropriate to use than MD5/SHA1?
...ash('crc32', 'The quick brown fox jumped over the lazy dog.'); echoes "413a86af", what is 8 character long string. Btw, it is 32bit number stored in HEX format. For example, "sha256" has 256bits hash, again stored as HEX, what gives 64 character long string.
– Martin
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How to export plots from matplotlib with transparent background?
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186
Use the matplotlib savefig function with the keyword argument transparent=True to save the imag...
IntelliJ IDEA: Running a shell script as a Run/Debug Configuration
... This worked well - thank you. I used Program: ` C:\Program Files (x86)\Git\bin\rm.exe ` And Parameters: ` -fr ~/.grails/.slcache/ ` As another example
– Ask613
Mar 6 '15 at 15:27
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How to check if a service is running on Android?
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86
Thanks for this solution. I'd like to add: Instead "com.example.MyService" is more elegant to use MyService.class.getName()
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How do you check if a variable is an array in JavaScript? [duplicate]
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Brad Larson♦
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answered Apr 20 '09 at 9:08
Peter SmitPeter Smit
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When to use Windows Workflow Foundation? [closed]
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86
Never. You will probably regret it:
Steep learning curve
Difficult to debug
Difficult to main...
Cannot import the keyfile 'blah.pfx' - error 'The keyfile may be password protected'
...sually installed as part of a Windows SDK. For example C:\Program Files (x86)\Microsoft SDKs\Windows\v8.0A\bin\NETFX 4.0 Tools\sn.exe. Most likely this location is not on the search path for your standard environment. However, the "Developer Command Prompt" installed by Visual Studio adds additio...