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Why is auto_ptr being deprecated?
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@HowardHinnant interesting doc! it is strange in a sense that if std::sort() is has a specialization for std::unique_ptr to use the move semantic as needed. I wonder why std::sort() can't be specialized for std::auto_ptr to correct the cop...
各编程语言读写文件汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术
...一种：fgets、fputs简单读写，一般用于处理文本文件。
int main(int argc, char* argv[])
{
FILE *fp = NULL;
/*打开文件*/
if((fp = fopen("test.txt", "w+")) == NULL)
{
printf("文件打开出错，请检查文件是否存在！\n");
return -1;
}
else
{
pri...
What's wrong with overridable method calls in constructors?
...ideMe();
}
class Child extends Base {
final int x;
Child(int x) {
this.x = x;
}
@Override
void overrideMe() {
System.out.println(x);
}
}
new Child(42); // prin...
PreparedStatement with list of parameters in a IN clause [duplicate]
...t possibleValues = ...
StringBuilder builder = new StringBuilder();
for( int i = 0 ; i < possibleValue.size(); i++ ) {
builder.append("?,");
}
String stmt = "select * from test where field in ("
+ builder.deleteCharAt( builder.length() -1 ).toString() + ")";
PreparedStateme...
Strtotime() doesn't work with dd/mm/YYYY format
...te_from_format('d/m/Y', $srchDate), 'Y/m/d');
This will work for you.
You convert the String into a custom date format where you can specify to PHP what the original format of the String is that had been given to it.
Now that it is a date format, you can convert it to PHP's default date format, whi...
Get Image size WITHOUT loading image into memory
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As the comments allude, PIL does not load the image into memory when calling .open. Looking at the docs of PIL 1.1.7, the docstring for .open says:
def open(fp, mode="r"):
"Open an image file, without loading the raster data"
There are a few file operations in the sourc...
How to fix Python indentation
...8 package_dir --recursive --select=E101,E121 --in-place
See also Tool to convert Python code to be PEP8 compliant.
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Difference between Mutable objects and Immutable objects [duplicate]
...For example a simple Comparator Implementation).
class Mutable{
private int value;
public Mutable(int value) {
this.value = value;
}
//getter and setter for value
}
class Immutable {
private final int value;
public Immutable(int value) {
this.value = value;
}
//only g...
Unix command to prepend text to a file
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This solution has problems ... it converts occurrences of "\n" to actual new lines ... problematic if you're prepending to a code file with strings that contain "\n".
– Paul Go
Mar 17 '16 at 15:16
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Check substring exists in a string in C
...rstr(sent, word) != NULL) {
/* ... */
}
Note that strstr returns a pointer to the start of the word in sent if the word word is found.
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