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How to show a confirm message before delete?
...message on clicking delete (this maybe a button or an image). If the user selects ' Ok ' then delete is done, else if ' Cancel ' is clicked nothing happens.
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Read Excel File in Python
...ues for a given column
values = df['Arm_id'].values
#get a data frame with selected columns
FORMAT = ['Arm_id', 'DSPName', 'Pincode']
df_selected = df[FORMAT]
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How do I check that a Java String is not all whitespaces?
I want to check that Java String or character array is not just made up of whitespaces, using Java?
15 Answers
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Why does Path.Combine not properly concatenate filenames that start with Path.DirectorySeparatorChar
...? "path1" : "path2");
Contract.EndContractBlock();
CheckInvalidPathChars(path1);
CheckInvalidPathChars(path2);
return CombineNoChecks(path1, path2);
}
internal static string CombineNoChecks(string path1, string path2)
{
if (path2.Length == 0)
return path1;
if (path...
Regular expression to match URLs in Java
...ckzah|xxx)"
+ "|y[et]"
+ "|z[amw]))";
/**
* Good characters for Internationalized Resource Identifiers (IRI).
* This comprises most common used Unicode characters allowed in IRI
* as detailed in RFC 3987.
* Specifically, those two byte Unicode characters are ...
In Vim, I'd like to go back a word. The opposite of `w`
...nd B to advance/go back a WORD (which
consists of a sequence of non-blank characters separated with white space, according to :h WORD).
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google mock分享（全网最全最好的gmock文档，没有之一） - C/C++ - 清泛网 ...
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using namespace std;
using ::testing::Return;
int main(int argc, char** argv) {
::testing::InitGoogleMock(&argc, argv);
string value = "Hello World!";
MockFoo mockFoo;
EXPECT_CALL(mockFoo, getArbitraryString()).Times(1).
WillOnce(Retu...
Are there disadvantages to using a generic varchar(255) for all text-based fields?
...e , town , country , phone number etc, all of which are defined as VARCHAR(255) even though none of these fields will ever come close to having 255 characters. (If you're wondering, it's this way because Ruby on Rails migrations map String fields to VARCHAR(255) by default and I never bothe...
How to read a file without newlines?
...works if the file ends with a newline, otherwise the last line will lose a character.
This assumption is true in most cases (especially for files created by text editors, which often do add an ending newline anyway).
If you want to avoid this you can add a newline at the end of file:
with open(th...
What is move semantics?
...:
#include <cstring>
#include <algorithm>
class string
{
char* data;
public:
string(const char* p)
{
size_t size = std::strlen(p) + 1;
data = new char[size];
std::memcpy(data, p, size);
}
Since we chose to manage the memory ourselves, we need...