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Replace a character at a specific index in a string?
...r replaced.
String myName = "domanokz";
String newName = myName.substring(0,4)+'x'+myName.substring(5);
Or you can use a StringBuilder:
StringBuilder myName = new StringBuilder("domanokz");
myName.setCharAt(4, 'x');
System.out.println(myName);
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Converting string to numeric [duplicate]
... |
edited Feb 8 '11 at 10:38
answered Feb 8 '11 at 10:03
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Have a variable in images path in Sass?
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210
Have you tried the Interpolation syntax?
background: url(#{$get-path-to-assets}/site/background...
Double negation (!!) in javascript - what is the purpose? [duplicate]
...ates it once, converting values like so:
undefined to true
null to true
+0 to true
-0 to true
'' to true
NaN to true
false to true
All other expressions to false
Then the other ! negates it again. A concise cast to boolean, exactly equivalent to ToBoolean simply because ! is defined as its negat...
How to condense if/else into one line in Python? [duplicate]
...le of Python's way of doing "ternary" expressions:
i = 5 if a > 7 else 0
translates into
if a > 7:
i = 5
else:
i = 0
This actually comes in handy when using list comprehensions, or sometimes in return statements, otherwise I'm not sure it helps that much in creating readable code. ...
How to put labels over geom_bar for each bar in R with ggplot2
...entity') +
geom_text(aes(label=Number), position=position_dodge(width=0.9), vjust=-0.25)
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Get first and last date of current month with JavaScript or jQuery [duplicate]
...nth(), 1);
var lastDay = new Date(date.getFullYear(), date.getMonth() + 1, 0);
or you might prefer:
var date = new Date(), y = date.getFullYear(), m = date.getMonth();
var firstDay = new Date(y, m, 1);
var lastDay = new Date(y, m + 1, 0);
EDIT
Some browsers will treat two digit years as being ...
How to set xlim and ylim for a subplot in matplotlib [duplicate]
...
260
You should use the OO interface to matplotlib, rather than the state machine interface. Almost ...
What does %>% mean in R [duplicate]
...Length Petal.Width Species
1 5.1 3.5 1.4 0.2 setosa
2 4.9 3.0 1.4 0.2 setosa
3 4.7 3.2 1.3 0.2 setosa
4 4.6 3.1 1.5 0.2 setosa
5 5.0 3.6 ...
几个有趣的Javascript Hack - 创意 - 清泛网 - 专注C/C++及内核技术
...辑网页内容
javascript：document.body.contentEditable='true';void(0);
访问任意网站，在地址栏输入以上代码，会发生当前网页已经变成编辑模式了。将上述代码中的true改成false重新执行一遍即可恢复。
2. 舞动的图片
javascript：R=0; ...