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How to get rid of the 'undeclared selector' warning
...se a leak because its selector is unknown".
– Hampden123
Nov 20 '13 at 16:38
1
@Hampden123: that ...
How do I get the key at a specific index from a Dictionary in Swift?
...ere is no guarantee it will come out ordered like below)
let dict = ["c": 123, "d": 045, "a": 456]
for (index, entry) in enumerate(dict) {
println(index) // 0 1 2
println(entry) // (d, 45) (c, 123) (a, 456)
}
If you want to sort first..
var sortedKeysArray = sorted(dict...
Reshaping data.frame from wide to long format
... 1952 10,058
7: AFG Afghanistan 1953 23,557
8: ALB Albania 1953 11,123
9: AFG Afghanistan 1954 24,555
10: ALB Albania 1954 12,246
Some alternative notations:
melt(setDT(wide), id.vars = 1:2, variable.name = "year")
melt(setDT(wide), measure.vars = 3:7, variable.name = "year")
melt...
String comparison using '==' vs. 'strcmp()'
...r use == for string comparison. === is OK.
$something = 0;
echo ('password123' == $something) ? 'true' : 'false';
Just run the above code and you'll see why.
$something = 0;
echo ('password123' === $something) ? 'true' : 'false';
Now, that's a little better.
...
为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
来源中文网文档：https://www.fun123.cn/reference/extensions/aix_dev.html
为什么需要开发拓展？App Inventor 2 是积木式在线安卓开发环境，利用拖拽式的方式实现代码块堆叠，从而完成相应的逻辑。上手很容易，但是由于代码块提供的功能...
Using Regular Expressions to Extract a Value in Java
...e matcher for pattern p and given string
Matcher m = p.matcher("Testing123Testing");
// if an occurrence if a pattern was found in a given string...
if (m.find()) {
// ...then you can use group() methods.
System.out.println(m.group(0)); // whole matched expression
...
How to get a one-dimensional scalar array as a doctrine dql query result?
...is so it supports indexBy gist.github.com/ostrolucky/f9f1e0b271357573fde55b7a2ba91a32
– gadelat
Apr 24 '17 at 15:04
add a comment
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...
How can I move a tag on a git branch to a different commit?
...imately has a problem and needs to be updated/re-released.
git tag -d fix123 # delete the old local tag
git push github :fix123 # delete the old remote tag (use for each affected remote)
git tag fix123 790a621265 # create a new local tag
git push github fix123 ...
List files in local git repo?
...026d64 glyphicons-halflings-regular.eot
100644 blob 94fb5490a2ed10b2c69a4a567a4fd2e4f706d841 glyphicons-halflings-regular.svg
100644 blob 1413fc609ab6f21774de0cb7e01360095584f65b glyphicons-halflings-regular.ttf
100644 blob 9e612858f802245ddcbf59788a0db942224bab35 glyphicons-halflings-re...
svn : how to create a branch from certain revision of trunk
... actually specify this on the command line using your example:
svn copy -r123 http://svn.example.com/repos/calc/trunk \
http://svn.example.com/repos/calc/branches/my-calc-branch
Where 123 would be the revision number in trunk you want to copy. As others have noted, you can also use the @ synt...