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Count table rows
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You can do COUNT(1), this will be the fastest way.
– Shota Papiashvili
Sep 14 '16 at 17:05
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How to get the current loop index when using Iterator?
...ad the same question and found using a ListIterator worked. Similar to the test above:
List<String> list = Arrays.asList("zero", "one", "two");
ListIterator iter = list.listIterator();
while (iter.hasNext()) {
System.out.println("index: " + iter.nextIndex() + " value: " + iter.next());
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Convert boolean to int in Java
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I just did a test converting 1,000,000 random Boolean values and this method was consistently faster than that based on the ternary operator. It shaved off about 10ms.
– Mapsy
Oct 24 '14 at 13:14
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How do I convert array of Objects into one Object in JavaScript?
...j, [item.key]: item.value}) ,{});
One more solution that is 99% faster is(tested on jsperf):
var object = arr.reduce((obj, item) => (obj[item.key] = item.value, obj) ,{});
Here we benefit from comma operator, it evaluates all expression before comma and returns a last one(after last comma). So ...
What are good message queue options for nodejs? [closed]
... except kue is not well maintained, has several issues and not a single test !
– vvo
Nov 28 '13 at 10:36
4
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How to hide status bar in Android
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@Ron I was testing on API level 8. It's possible the behaviour is different on other levels?
– Ben Clayton
Jan 21 '13 at 14:02
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Developing C# on Linux
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You can also install it using conda (tested on Ubuntu):
conda create --name csharp
conda activate csharp
conda install -c conda-forge mono
share
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improve this...
What command means “do nothing” in a conditional in Bash?
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If you don't test the result both true and false are effectively no-ops as far as the script is concerned, but in principle they could fork in some shells that accept this syntax so perhaps : is better.
– dmckee --- ...
Base64Util 拓展：支持图像框、画布、文件、文本字符串、图像精灵base64编...
...件Base64 为 调用 Base64Util.文件转Base64 "/sdcard/AppInventor/data/test.png"
显示通知 "文件已编码为Base64格式"
设置组件背景
当 设置背景按钮.被点击
调用 Base64Util.Base64转背景图 背景图片数据 按钮1
注意事项...
Adding dictionaries together, Python [duplicate]
...'dic0': 0}
dic1 = {'dic1': 1}
dic2 = dict(dic0.items() + dic1.items())
I tested this in IDLE and it works fine.
However, the previous question on this topic states that this method is slow and chews up memory. There are several other ways recommended there, so please see that if memory usage is i...