大约有 36,000 项符合查询结果(耗时:0.0373秒) [XML]

https://stackoverflow.com/ques... 

Convert number strings with commas in pandas DataFrame to float

...e step. You need to set the locale first: In [ 9]: import locale In [10]: from locale import atof In [11]: locale.setlocale(locale.LC_NUMERIC, '') Out[11]: 'en_GB.UTF-8' In [12]: df.applymap(atof) Out[12]: 0 1 0 1200 4200.00 1 7000 -0.03 2 5 0.00 ...
https://stackoverflow.com/ques... 

arrayfun can be significantly slower than an explicit loop in matlab. Why?

... 101 You can get the idea by running other versions of your code. Consider explicitly writing out th...
https://stackoverflow.com/ques... 

Aligning a float:left div to center?

... clairesuzyclairesuzy 25.5k77 gold badges5050 silver badges5151 bronze badges 3 ...
https://stackoverflow.com/ques... 

Add Text on Image using PIL

..."sans-serif.ttf", 16) # draw.text((x, y),"Sample Text",(r,g,b)) draw.text((0, 0),"Sample Text",(255,255,255),font=font) img.save('sample-out.jpg') You might need to put some extra effort to calculate font size. In case you want to change it based on amount of text user has provided in TextArea. T...
https://stackoverflow.com/ques... 

Force R to stop plotting abbreviated axis labels - e.g. 1e+00 in ggplot2

In ggplot2 how can I stop axis labels being abbreviated - e.g. 1e+00, 1e+01 along the x axis once plotted? Ideally, I want to force R to display the actual values which in this case would be 1,10 . ...
https://stackoverflow.com/ques... 

Bash empty array expansion with `set -u`

... 20 The only safe idiom is ${arr[@]+"${arr[@]}"} This is already the recommendation in ikegami's an...
https://stackoverflow.com/ques... 

How can I initialize base class member variables in derived class constructor?

...these variables private in A }; class B : public A { public: B() : A(0, 0) // Calls A's constructor, initializing a and b in A to 0. { } }; share | improve this answer | ...
https://stackoverflow.com/ques... 

Select2 dropdown but allow new values by user?

... 100 For version 4+ check this answer below by Kevin Brown In Select2 3.5.2 and below, you can use ...
https://stackoverflow.com/ques... 

How to check if a String contains another String in a case insensitive manner in Java?

... Mike B. 9,7541717 gold badges6868 silver badges108108 bronze badges answered Sep 17 '08 at 19:41 Dave L.Dave L. 40k1111 gold b...
https://stackoverflow.com/ques... 

How would you compare jQuery objects?

... You need to compare the raw DOM elements, e.g.: if ($(this).parent().get(0) === $('body').get(0)) or if ($(this).parent()[0] === $('body')[0]) share | improve this answer | ...