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How to check that a string is an int, but not a double, etc.?
...sing ctype_digit?
From the manual:
<?php
$strings = array('1820.20', '10002', 'wsl!12');
foreach ($strings as $testcase) {
if (ctype_digit($testcase)) {
echo "The string $testcase consists of all digits.\n";
} else {
echo "The string $testcase does not consist of all dig...
Avoid trailing zeroes in printf()
...xx special case).
if (d2 < 1) sz++;
while (d2 >= 1) { d2 /= 10.0; sz++; }
// Adjust for decimal point and fractionals.
sz += 1 + n;
// Create format string then use it.
sprintf (s, "%*.*f", sz, n, d);
}
int main (void) {
char str[50];
double num[] = { 40, ...
Benefits of using the conditional ?: (ternary) operator
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edited Jul 22 '10 at 19:57
community wiki
...
Do while loop in SQL Server 2008
...ILE loop.
Examples are taken from here: http://blog.sqlauthority.com/2007/10/24/sql-server-simple-example-of-while-loop-with-continue-and-break-keywords/
Example of WHILE Loop
DECLARE @intFlag INT
SET @intFlag = 1
WHILE (@intFlag <=5)
BEGIN
PRINT @intFlag
SET @intFlag = @intFlag ...
Is it possible to use 'else' in a list comprehension? [duplicate]
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edited Jun 1 '10 at 17:05
answered Jun 1 '10 at 17:00
...
How do I replace NA values with zeros in an R dataframe?
...ent in @gsk3 answer. A simple example:
> m <- matrix(sample(c(NA, 1:10), 100, replace = TRUE), 10)
> d <- as.data.frame(m)
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10
1 4 3 NA 3 7 6 6 10 6 5
2 9 8 9 5 10 NA 2 1 7 2
3 1 1 6 3 6 NA 1 4 1 6
4 NA 4 NA 7 10 2 NA 4 ...
Is there a numpy builtin to reject outliers from a list
...
10 Answers
10
Active
...
Using multiple let-as within a if-statement in Swift
...aining operation:
let dict = ["latitude": 2.0 as AnyObject?, "longitude": 10.0 as AnyObject?]
let latitude = dict["latitude"]
let longitude = dict["longitude"]
if let latitude = latitude as? Double, let longitude = longitude as? Double {
print(latitude, longitude)
}
// prints: 2.0 10.0
2....
In Python how should I test if a variable is None, True or False
...
answered Jan 7 '10 at 13:46
PaulMcGPaulMcG
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