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Build and Version Numbering for Java Projects (ant, cvs, hudson)
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63
For several of my projects I capture the subversion revision number, time, user who ran the buil...
Android Facebook integration with invalid key hash
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edited Nov 19 '19 at 13:35
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
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思维导图在快速阅读或是其它学习工作中的作用 - 创意 - 清泛网 - 专注C/C++...
...买的书层出不穷，可是总担心买回去也没有时间消化？
3、如果在图书馆的书海中遨游，您是不是望书兴叹，游不了多久见没有时间了？
4、作为学生您是不是感觉学习教材都比较吃力，只有刻苦才能通过考试？
5、已经工作的...
How do I fix blurry text in my HTML5 canvas?
...nt runs independent from the device or monitor's pixel ratio.
On the iPad 3+, this ratio is 2. This essentially means that your 1000px width canvas would now need to fill 2000px to match it's stated width on the iPad display. Fortunately for us, this is done automatically by the browser. On the ...
Is there an MD5 Fixed Point where md5(x) == x?
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138
Since an MD5 sum is 128 bits long, any fixed point would necessarily also have to be 128 bits l...
What's the most efficient way to erase duplicates and sort a vector?
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23 Answers
23
Active
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Get selected value/text from Select on change
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edited Mar 3 '18 at 9:15
YakovL
4,8141010 gold badges4242 silver badges6060 bronze badges
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JavaScript check if variable exists (is defined/initialized)
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3153
You want the typeof operator. Specifically:
if (typeof variable !== 'undefined') {
// th...
Trying to embed newline in a variable in bash [duplicate]
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p=$( embed_newline $var ) # Do not use double quotes "$var"
echo "$p"
3. Using $'\n' (less portable)
bash and zsh interprets $'\n' as a new line.
var="a b c"
for i in $var
do
p="$p"$'\n'"$i"
done
echo "$p" # Double quotes required
# But -e not required
Avoid extra leading newli...
Replace string within file contents
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"t" for text mode is Python 3 only. Also, you provide a context manager for your ouput file, but fail to close your input file, which seems inconsistent.
– Steven Rumbalski
Nov 8 '10 at 21:50
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