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How do I append one string to another in Python?
...fy empirically.
$ python -m timeit -s"s=''" "for i in xrange(10):s+='a'"
1000000 loops, best of 3: 1.85 usec per loop
$ python -m timeit -s"s=''" "for i in xrange(100):s+='a'"
10000 loops, best of 3: 16.8 usec per loop
$ python -m timeit -s"s=''" "for i in xrange(1000):s+='a'"
10000 loops, best of...
How to read the output from git diff?
...me from builtin-http-fetch.c
rename to http-fetch.c
index f3e63d7..e8f44ba 100644
--- a/builtin-http-fetch.c
+++ b/http-fetch.c
@@ -1,8 +1,9 @@
#include "cache.h"
#include "walker.h"
-int cmd_http_fetch(int argc, const char **argv, const char *prefix)
+int main(int argc, const char **argv)
{
+ ...
Detect blocked popup in Chrome
...andler like this:
var myPopup = window.open("site-on-my-domain", "screenX=100");
if (!myPopup)
alert("failed for most browsers");
else {
myPopup.onload = function() {
setTimeout(function() {
if (myPopup.screenX === 0)
alert("failed for chrome");
}...
How to check if an app is installed from a web-page on an iPhone?
...alueOf();
setTimeout(function () {
if (new Date().valueOf() - now > 100) return;
window.location = "https://itunes.apple.com/appdir";
}, 25);
window.location = "appname://";
That way, if there has been a freeze in code execution (i.e., app switching), it won't run.
...
What are inline namespaces for?
... @Walter: you remove inline from file V99.h in the release that includes V100.h. You also modify Mine.h at the same time, of course, to add an extra include. Mine.h is part of the library, not part of the client code.
– Steve Jessop
Jun 13 '12 at 14:01
...
Commit changes to a different branch than the currently checked out branch with subversion
...committing from the root I say is recommended.
– ikku100
Dec 10 '15 at 11:36
@ikku100 if there are no changes in those...
How to initialize a List to a given size (as opposed to capacity)?
...ow when needed ?
When you do this:
List<int> = new List<int>(100);
You create a list whose capacity is 100 integers. This means that your List won't need to 'grow' until you add the 101th item.
The underlying array of the list will be initialized with a length of 100.
...
Initialise a list to a specific length in Python [duplicate]
...reate 2d list. If you create a list l = [[0]*10]*10], try change l[0][0] = 100, you will find that l[1][0], l[2][0] ... l[9][0] are all set to 100. It is because * replicates reference for object.
– John Wu
Sep 29 '14 at 13:31
...
CSS “color” vs. “font-color”
... border: solid 10px;
display: inline-block;
width: 60px;
height: 100px;
margin: 10px;
}
.innerElement2 {
background: currentColor;
display: inline-block;
width: 60px;
height: 100px;
margin: 10px;
}
<div class="element">
<div class="innerElement1"><...
How to file split at a line number [closed]
...
file_name=test.log
# set first K lines:
K=1000
# line count (N):
N=$(wc -l < $file_name)
# length of the bottom file:
L=$(( $N - $K ))
# create the top of file:
head -n $K $file_name > top_$file_name
# create bottom of file:
tail -n $L $file_name > bo...