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Is it worth using Python's re.compile?
...WIW:
$ python -m timeit -s "import re" "re.match('hello', 'hello world')"
100000 loops, best of 3: 3.82 usec per loop
$ python -m timeit -s "import re; h=re.compile('hello')" "h.match('hello world')"
1000000 loops, best of 3: 1.26 usec per loop
so, if you're going to be using the same regex a l...
Use JavaScript to place cursor at end of text in text input element
...ike this
setTimeout(function(){ that.selectionStart = that.selectionEnd = 10000; }, 0);
Using jQuery (to set the listener, but it's not necessary otherwise)
$('#el').focus(function(){
var that = this;
setTimeout(function(){ that.selectionStart = that.selectionEnd = 10000; }, 0);
});
...
Why is there no tuple comprehension in Python?
...
List comprehension:
$ python3 -m timeit "a = [i for i in range(1000)]"
10000 loops, best of 3: 27.4 usec per loop
Tuple from list comprehension:
$ python3 -m timeit "a = tuple([i for i in range(1000)])"
10000 loops, best of 3: 30.2 usec per loop
Tuple from generator:
$ python3 -m timeit "a =...
How can I apply a function to every row/column of a matrix in MATLAB?
...,[0 0 1 1;0 1 0 1])
ans =
0.00000 1.00000 0.00000 1.00000
0.10000 0.10000 1.10000 1.10000
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How to sign an android apk file
...ytool -genkey -v -keystore my.keystore -keyalg RSA -keysize 2048 -validity 10000 -alias app
Step 2 or 4: Zipalign
zipalign which is a tool provided by the Android SDK found in e.g. %ANDROID_HOME%/sdk/build-tools/24.0.2/ is a mandatory optimzation step if you want to upload the apk to the Play Sto...
setTimeout / clearTimeout problems
...rtTimer() {
window.clearTimeout(timer);
//var millisecBeforeRedirect = 10000;
timer = window.setTimeout(function(){alert('Hello!');},10000);
}
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How to print a number with commas as thousands separators in JavaScript
...00, "100");
failures += !test(1000, "1,000");
failures += !test(10000, "10,000");
failures += !test(100000, "100,000");
failures += !test(1000000, "1,000,000");
failures += !test(10000000, "10,000,000");
if (failures) {
console.log(`${failures} test(s) failed`);
} else {
...
Get key by value in dictionary
...st.values().index(search_age)]
Results from profile.run() on each method 100000 times:
Method 1:
>>> profile.run("for i in range(0,100000): method1(list,16)")
200004 function calls in 1.173 seconds
Method 2:
>>> profile.run("for i in range(0,100000): method2(list,16)")
...
How can I create a keystore?
...release-key.keystore -alias alias_name -keyalg RSA -keysize 2048 -validity 10000
Keytool prompts you to provide passwords for the keystore, provide the Distinguished Name fields and then the password for your key. It then generates the keystore as a file called my-release-key.keystore in the direct...
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
... startP = chrono::system_clock::now();
for( unsigned k = 0; k < 10000; k++){
for (uint64_t i=0;i<size/8;i+=4) {
uint64_t r0 = buffer[i + 0];
uint64_t r1 = buffer[i + 1];
uint64_t r2 = buffer[i + 2];
uint64_t r3 = buffer[i + 3];
...