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Are Javascript arrays sparse?
... toString() before being added to the hash. You can confirm this with some test code:
<script>
var array = [];
array[0] = "zero";
array[new Date().getTime()] = "now";
array[3.14] = "pi";
for (var i in array) {
alert("array["+i+"] = " + array[i] + ", typeof("+i+") == " + typeo...
Is it possible to make the -init method private in Objective-C?
...
Objective-C, like Smalltalk, has no concept of "private" versus "public" methods. Any message can be sent to any object at any time.
What you can do is throw an NSInternalInconsistencyException if your -init method is invoked:
- (id)init {
...
How to convert R Markdown to PDF?
...umid you might have missed the up-to-date part (well, if you are not using testing).
– daroczig
Nov 23 '12 at 8:34
Yea...
Recursively add files by pattern
...va
with a recent git:
$git version
git version 1.7.3.4
Files for the test:
$find -name .git -prune -o -type f -print | sort
./dirA/dirA-1/dirA-1-1/file1.txt
./dirA/dirA-1/dirA-1-2/file2.html
./dirA/dirA-1/dirA-1-2/file3.txt
./dirA/dirA-1/file4.txt
./dirB/dirB-1/dirB-1-1/file5.html
./dirB/dirB...
C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
...致等)
例子3：
Code:
#include <stdio.h>
int main(){
char test[1];
printf("%c", test[1000000000]);
return 0;
}
这里是比较极端的例子，但是有时候可能是会出现的，是个明显的数组越界的问题
或者是这个地址是根本就不存在的
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UnicodeDecodeError: 'ascii' codec can't decode byte 0xef in position 1
...;> s1 = s.decode('utf-8')
>>> print s1
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeEncodeError: 'ascii' codec can't encode characters in position 1-5: ordinal not in range(128)
>>>
Consult the docs for your linux variant to disc...
UICollectionView Set number of columns
...[self.myCollectionView.collectionViewLayout invalidateLayout];
}
Additionally, here are 2 really good tutorials on UICollectionViews:
http://www.raywenderlich.com/22324/beginning-uicollectionview-in-ios-6-part-12
http://skeuo.com/uicollectionview-custom-layout-tutorial
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How do I change the working directory in Python?
...If the exception is thrown, do not perform any recursive operations, especially destructive ones. They will operate on the old path and not the new one.
Return to your old directory when you're done. This can be done in an exception-safe manner by wrapping your chdir call in a context manager, lik...
Pythonic way to print list items
I would like to know if there is a better way to print all objects in a Python list than this :
11 Answers
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How can I add a PHP page to WordPress?
...og that will execute my PHP code in it, whilst remaining a part of the overall site CSS/theme/design.
17 Answers
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