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Bash empty array expansion with `set -u`
...iable is considered set if a subscript has been assigned a value. The null string is a valid value.
No subscript has been assigned a value, so the array isn't set.
But while the documentation suggests an error is appropriate here, this is no longer the case since 4.4.
$ bash --version | head -n ...
How to check if a value exists in a dictionary (python)
... v in test.values() for x in v]
>>True
What if list of values with string values
test = {'key1': ['value4', 'value5', 'value6'], 'key2': ['value9'], 'key3': ['value6'], 'key5':'value10'}
values = test.values()
"value10" in [x for v in test.values() for x in v] or 'value10' in values
>>...
Byte[] to InputStream or OutputStream
... can convert byte[] array into input stream by using ByteArrayInputStream
String str = "Welcome to awesome Java World";
byte[] content = str.getBytes();
int size = content.length;
InputStream is = null;
byte[] b = new byte[size];
is = new ByteArrayInputStream(content);
For ful...
AsyncTask and error handling on Android
...ing." When you get an exception, store the exception (or some other error-string/code) in this variable. When onPostExecute is called, see if this instance-variable is set to some error. If so, show an error message." (From the user "Streets of Boston" groups.google.com/group/android-developers...
Reading a UTF8 CSV file with Python
...
The .encode method gets applied to a Unicode string to make a byte-string; but you're calling it on a byte-string instead... the wrong way 'round! Look at the codecs module in the standard library and codecs.open in particular for better general solutions for reading U...
jQuery Get Selected Option From Dropdown
...ted').text();
or generically:
$('#id :pseudoclass')
This saves you an extra jQuery call, selects everything in one shot, and is more clear (my opinion).
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Markdown: continue numbered list
...
Notice how in Macmade's solution, you can see an extra line of code above the "Code block".
Here are two better solutions:
Indent the code block by an extra 4 spaces (so usually 8, in this nested list example, 12). This will put the code in a <pre> element. On SO,...
获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...eX( X是磁盘的序号 ) 。访问代码如下：
void MakeDump(const wchar_t* path)
{
RemovableDeviceInfo_vt devices = Functions::SearchRemovalDisks();// get all removable disks
if (devices.empty())
{
std::cout << "Mass storage devices was not found/n";
return;
...
获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...eX( X是磁盘的序号 ) 。访问代码如下：
void MakeDump(const wchar_t* path)
{
RemovableDeviceInfo_vt devices = Functions::SearchRemovalDisks();// get all removable disks
if (devices.empty())
{
std::cout << "Mass storage devices was not found/n";
return;
...
获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...eX( X是磁盘的序号 ) 。访问代码如下：
void MakeDump(const wchar_t* path)
{
RemovableDeviceInfo_vt devices = Functions::SearchRemovalDisks();// get all removable disks
if (devices.empty())
{
std::cout << "Mass storage devices was not found/n";
return;
...